3D-printed products and 3MF downloads from Roxium in Burlington, Ontario

Two spirals in one print: an outer shell that twists one way and a core that twists the other, turning past each other as you fiddle. Printed in a single colour it reads as one tapering cone; give the shell and the core a colour each and the two spirals separate in the eye as they turn, which is what the designer's own pictures show. The profile that prints it is 0.2 mm layers, 3 walls, 15 per cent gyroid infill, PLA, no supports, standing upright exactly as supplied.

Design by NerdHerder

A pencil holder wearing a puffer jacket: quilted panels all round, with a zip, a collar and sleeves running up the sides. It holds pens, pencils, markers, brushes or small tools, and it is sturdy enough to be knocked about a desk. About two hours of printing, and the quilted panels take filament colours well - solid winter colours, pastels, or something loud.

Design by Sitsero

An impossible passthrough built as a pyramid: the parts pass through one another and no amount of turning lets them go. 2.8" tall, about 21 g of plastic.

Design by BeninManc

An impossible passthrough shaped like an hourglass: two halves that turn through each other and stay locked together. 2.8" tall, about 24 g of plastic.

Design by BeninManc

A hard hat that goes on a keyring - the dome, the brim and the little ridge down the middle, printed in one piece with a hole through the top. 1.5" across, and it works as a key tag or a desk charm.

Design by astavr

A gyro fidget spinner: three curved rings interlock around a centre post and whirl as one, so it prints in a single piece with no bearings and no assembly - just flick it and go. The rings are loose in their track out of the printer, which is the part that takes a few tries to get right and the reason this one gets measured before it ships.

A printable reading ruler with an integrated bookmark pointer. The pointer holds your line while you read and marks your place when the book closes - pick the length that suits your book.

A japandi vase with a rifted surface: a faceted body that catches the light along its ridges and narrows to the rim.

Design by DueMakers

An angled, ribbed plant pot for a windowsill, with a drip tray that stands it clear of its own water. The pot tapers up from a 45-degree base and drops into a tray with a hollow reservoir, so what drains out sits below the base instead of wicking back up into the soil, and the tray lifts off to empty. The floor has a 2.5 mm centre hole, a ring of six, and a ring of twelve at the outer edge. Forty-eight round bead ribs run up the angle and on to the rim, so the pot has something to grip and looks alive in daylight. Three sizes, each one as wide as it is tall: 2.5"x2.5", 3.25"x3.25" and 5"x5". It prints as two pieces, no supports and no assembly, in PLA - which is happy on an indoor sill, while a window that bakes in direct sun or a spot outside wants PETG. The last picture is a render of the printable model; the others are photographs of the printed pot.

A low-poly vase built from big flat facets that twist as they rise, so light catches every plane differently. 5.5" across its widest and 3.9" tall, printed in one piece.

Design by Harry

A guide that keeps a garden hose off the flowers: the hose runs through the roller and the stake holds it where you want it, so dragging it round a corner stops flattening the bed. 4.7" tall, printed as a body and a stake. Shown as a render, not a photo.

Design by Tulmuz

A hexagonal tube cut into one continuous spiral, so it springs and flexes in the hand and the turns of the helix roll past each other under a thumb. It prints as a single piece and needs no assembly, and it stands 2.8" tall by 1.3" across. Shown as a render, not a photo.

Design by NerdHerder

A frog that jumps: press its back and it springs off the table, and the pond bowl catches it. Pick the frog on its own or the bowl with it - the bowl is 5" across, and three frogs fit on one plate if you want a set. Shown as a render, not a photo.

Design by Niski

A ruler that folds: nineteen 160 mm segments that hinge end to end, plus the two end caps, so it measures a room and then folds down to a pocket. The full set is 19 segments; the smaller option is the same design at 70 per cent, which is the one for a desk drawer. Shown as a render, not a photo.

Design by PenguinPrototypes

A round indoor pot with a pleated, fabric-like skirt, standing on its own matching base so it can be moved without leaving a ring on the shelf. Two pieces, both printed in the same colour, 4.6" wide and 3" tall together. Shown as a render, not a photo.

Design by NordicCreativa

A desk caddy printed in one piece: a raised back that stands a phone at a reading angle, a round well for pens, and a square tray for a watch, keys or a card, with a slot for a charging cable to pass through. It is 7.1" wide by 3.5" deep. Shown as a render, not a photo.

Design by Maker76

A planetary gear set printed in place: six small gears mesh between a sun gear and a toothed ring, so turning any one of them turns all the rest. It is 2.5" across and prints as a single piece with nothing to snap together. Shown as a render, not a photo.

Design by HurtTree

A hanging books-read counter: a sign with a row of numbers that slide into it, so the count can be moved along as the year goes. It is two plates - the sign with one of each number, and a second sign with the numbers again so the count can pass ten - and either can be bought on its own. Shown as a render, not a photo.

Design by ZHeights

An inner cone passes right through an outer one and neither of them comes apart - that is the whole trick, and it prints as a single piece. Roll it in your hands and the two bodies slide past each other, which is the part that keeps fingers busy. Printed in two colours the cones separate in the eye and the pass-through reads as impossible; printed in one it looks like a solid cone until it moves. The picture is a render of the printable model - real photographs of the print go up once the first one is made.

Design by What3d

A T-rex that holds your page: the dinosaur stands on the spine of the book with its legs either side, and the tail curls over the top. It prints flat in one piece, 3.6" tall. Shown as a render, not a photo.

Design by UncleFlappy

A stackable glasses stand: a fin that the cradles slide onto, so the tower grows to whatever height the collection needs. The cradles come in three widths - 67, 77 and 87 mm - and each holds one pair nose-down by the bridge, which suits slim readers and deep sunglass frames alike. The plate prints a whole tower's worth of parts, 167 by 199 mm laid out as the designer arranges it. Designed by Badger Sound Forge and printed under Creative Commons Attribution-NoDerivatives 4.0 (CC BY-ND 4.0). Shown as a render of the printable model, not a photograph.

Design by Badger Sound Forge

A modular glasses stand: a round 143 mm base with a spindle, a post that carries two long arms, and a cradle that stacks on the spindle, so two pairs or a shelf-full can be kept upright and out of the way. The arms take frames by the bridge and the base is heavy enough not to tip when one pair comes off. Designed by Rockthered and printed under Creative Commons Attribution-ShareAlike 4.0 (CC BY-SA 4.0). Shown as a render of the printable model, not a photograph.

Design by Rockthered

A phone stand that folds out of a keychain: the plate swings up and the phone leans back on it, and folded away it hangs on your keys. Shown as a render, not a photo.

Design by musielovsky

A square indoor planter with ruched, fabric-like sides and a clean flat rim, so it reads as a cloth-wrapped pot until you pick it up. It prints in PLA with a drainage hole in the base, and it is 4.7" wide by 3.9" tall. Shown as a render, not a photo.

Design by Dossi

The Thinker, sitting on a plinth with his chin on his fist and a pair of glasses resting across his knee: 101 by 141 mm and 114 mm tall, printed in one piece as a desk glasses holder. The pose is what does the work - a pair sits in the crook of the arm and the knee, so it is always where it was put. Designed by Abz and printed under Creative Commons Attribution-NoDerivatives 4.0 (CC BY-ND 4.0). Shown as a render of the printable model, not a photograph.

Design by Abz

A fidget spinner small enough to live in a pocket: one piece, no bearings, no axle to glue, printed in place so the two halves and their weights come off the plate ready to spin. It is a 15-minute print in the designer's own profile, which is why it makes a good giveaway or market-stock item. Printed in a silk filament the spinning face catches the light. The picture is a render of the printable model - real photographs of the print go up once the first one is made.

Design by DragonFusion3D

A strip that threads onto a guitar strap and holds a stack of picks, so a fresh one is within reach in the middle of a song: 100 mm long and 25 mm wide, printed in one piece. It sits on the strap rather than in a pocket, which is where picks go to be lost. Designed by willywidget and printed under Creative Commons Attribution 4.0 (CC BY 4.0). Shown as a render of the printable model, not a photograph.

Design by willywidget

A record sleeve stands on a ledge under a patterned back panel, and the ledge carries NOW PLAYING across its face in relief, so the record on the shelf is announced rather than guessed at. 200 mm wide and 159 mm tall - wide enough for a 12 inch sleeve - printed in one piece with no supports under the sign. Designed by Kosmok and printed under Creative Commons Attribution 4.0 (CC BY 4.0). Shown as a render of the printable model, not a photograph.

Design by Kosmok

A reading guide that frames one line at a time so the page cannot swim: 5.1" x 1.4", 1.4 mm thick, light enough to leave in a book. Kept for kids learning to read, and for anyone whose attention slides down a full page. Shown as a render of the printable model, not a photograph.

Design by fgiancarelli

A stand for a pair of drumsticks: a flat 195 mm base and a cradle post that takes them by the shaft, so they stand upright on a riser or a shelf instead of rolling off the kit. 238 mm across as printed, in two parts, with the post sitting in its seat on the base. Designed by jakub.fousek97 and printed under Creative Commons Public Domain. Shown as a render of the printable model, not a photograph.

Design by jakub.fousek97

An LP on the wall: a back plate with a shelf the cover stands on and two brackets that hold the record upright in front of it, so the sleeve and the disc are both on show. 218 by 214 mm and 187 mm deep, printed as one piece. Designed by LucMonnom and printed under Creative Commons Public Domain. Shown as a render of the printable model, not a photograph.

Design by LucMonnom

A modular hydroponic tower printed as twelve parts: a base, the column that stacks, five growing cups and the plates that close the sides. The column is 220 mm across and 128 mm tall, each cup 55 mm. The modules come apart, so a tower can be built one section at a time and taken down again. Shown as a render of the printable model, not a photograph.

Design by user_139533078

A three-part seed germinator - base, insert and lid - 4.5" x 5.5" and 20 mm deep, printed in whatever colour you pick. Shown as a render of the printable model, not a photograph.

Design by 3dmonios

Two strands twisted around each other into a pen stand: a double helix about 22 cm tall on a 14 cm square base, printed in one piece with nothing to assemble. Pens drop into the gaps between the rungs and lean out along the twist, so a handful of them fan apart instead of clumping together in a cup - and the base is wide enough that a full stand does not tip. Empty, it is a desk ornament rather than a mug with pens in it, which is most of what a pen holder does all day. Printed in PLA at a 0.2 mm layer, about 34 g of plastic. Designed by AndreUser and printed under Creative Commons Attribution 4.0 (CC BY 4.0). The picture is a render of the printable model - real photographs of the print go up once the first one is made.

Design by AndreUser

A mosquito trap that uses a jar you already have: a funnel that drops into a mason jar's mouth, so a jar of water and a spoon of sugar becomes a trap. The cone lets a mosquito in and the jar's own walls keep it there. Three funnels come off the plate, 76 mm across and 47 mm tall, for the jar sizes the designer covered - standard jam jars among them. Designed by IanFoulds, a remix of the Mosquito Trap by Urasxman, and printed under Creative Commons Attribution 4.0 (CC BY 4.0). Shown as a render of the printable model, not a photograph.

Design by IanFoulds

A capo in two printed parts: a jaw that sits across the strings and the lever that clamps it down, 92 mm wide so it spans a standard six-string fretboard. It goes on the neck above the fret and holds the strings at the new position, which is what lets one shape be played in any key. Designed by Kevdev, a remix of the Guitar Capo by HarleyPrints, and printed under Creative Commons Attribution 4.0 (CC BY 4.0). Shown as a render of the printable model, not a photograph.

Design by Kevdev

A short sword bookmark with its own sheath: the blade marks your page and the scabbard clips back over it. 5.7" long, printed flat, the two pieces together weighing about 8 g. Shown as a render of the printable model, not a photograph.

Design by Forged in Filament

An impossible passthrough wound as a spiral: the helical parts turn through each other and hold, printed in one piece. 2.8" tall, about 29 g of plastic. The picture is a render of the printable model - real photographs of the print go up once the first one is made.

Design by BeninManc

A plectrum printed flat at half a millimetre, 27 mm tall and 24 mm across, with the designer's design across the face - the pun in the name is the whole idea. Thin picks bend more than thick ones, so this is the one for strumming rather than for shredding. Designed by marshal.meacham and printed under Creative Commons Attribution 4.0 (CC BY 4.0). Shown as a render of the printable model, not a photograph.

Design by marshal.meacham

A plate of music notes cut flat at 3 mm: single quavers, beamed pairs, a dotted note and the odd small rest, from 25 mm up to 67 mm long, so a wall, a noticeboard or the front of a piano can be dressed with them. They print lying down, which means no supports and a clean face straight off the plate. Designed by EcneNomma and printed under Creative Commons Attribution 4.0 (CC BY 4.0). Shown as a render of the printable model, not a photograph.

Design by EcneNomma

A rail that a CD jewel case stands in, ribbed along its length so the case leans back instead of sliding forward, on four short feet that keep the disc off the shelf. 149 mm wide and 30 mm tall - the width of a standard case, with a little room either side. Designed by ToToKia and printed under Creative Commons Public Domain. Shown as a render of the printable model, not a photograph.

Design by ToToKia

A pick holder with four feet that stands on an amp or a desk: slanted slots take plectrums by the tip so they can be pulled out one at a time, and the block is 90 mm long, 28 mm wide and 12 mm tall. The slots are cut at an angle, which is what stops a pick sliding back down into the holder. Designed by gareth7562 and printed under Creative Commons Attribution 4.0 (CC BY 4.0). Shown as a render of the printable model, not a photograph.

Design by gareth7562

A practice mute for trombone, printed in three parts: the long tapered body that goes down into the bell, the flared cup that caps it, and the small collar that keeps the two together. 250 mm long and 193 mm across the cup, so it takes a full-size bell. The cup is what does the muting, so the horn can be played in an apartment without the neighbours learning the set list. Designed by 烤肉大师 and printed under Creative Commons Attribution 4.0 (CC BY 4.0). Shown as a render of the printable model, not a photograph.

Design by 烤肉大师

Four plectrum shapes, two of each, printed flat as one sheet: a teardrop, a jazz point, a wide triangle and a rounded standard, at 1.0 and 1.4 mm so a player can find the thickness they like without buying four packs. Each pick is about 34 mm long and the texture on the back of the thicker ones keeps a sweaty thumb where it belongs. Designed by SF3DPrints and printed under Creative Commons Attribution 4.0 (CC BY 4.0). Shown as a render of the printable model, not a photograph.

Design by SF3DPrints

An impossible passthrough in pentagon form: the inner shape turns through the outer one and cannot come apart. 2.8" tall, about 31 g of plastic. The picture is a render of the printable model - real photographs of the print go up once the first one is made.

Design by BeninManc

A cone that passes through its own core and keeps going - a puzzle you can hold, printed in one piece with no assembly. 2.8" tall, about 19 g of plastic. The picture is a render of the printable model - real photographs of the print go up once the first one is made.

Design by BeninManc

A vortex vase whose wall spirals in one continuous swirl from base to off-centre mouth, so it looks like it is still turning. 5.4" tall over a 3" body, printed in one piece. The picture is a render of the printable model - real photographs of the print go up once the first one is made.

Design by oakliz27

A pen holder clad in raised dragon scales, hexagonal all the way round, with a smooth inner cup for pens, pencils or brushes. 3.1" across and 4" tall, printed in one piece. The picture is a render of the printable model - real photographs of the print go up once the first one is made.

Design by 3DWoosh