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

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 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 push-fit cover for the Tesla Cybertruck's front tow hook recess, so the bumper reads as one clean line instead of an open slot. It clips in with a lip at each end and no hardware. Choose the material: PETG shrugs off sun and road salt, PLA is the everyday version at the same price. The prototype in the video carries the name "Shadowfax" embossed into its face - that was that truck's own, and yours can have a word of its own cut the same way: type it while you are adding it to the cart, up to 12 characters, +$10. A personalized cover is made to order, so it is paid online rather than reserved for cash at pickup. Leave it blank and the face is plain.

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

A lid that snaps onto a standard can and seals it up again between sips, and doubles as an opener when you slip it over the tab and tilt. It is the wider, support-free version, and it fits both the slim and the fat cans the designer built it around - European 202 cans, so if yours is a different can it is worth a quick measure. Light sanding on the slots is the only finishing it asks for.

Design by MakerShed

A bow that clips onto a straw: the straw runs through the middle and the bow sits above the lid. Shown as a render, not a photo.

Design by Morganja

A phone stand with a woodgrain surface that all but disappears behind the phone, so what you see is the screen standing on the desk rather than the stand holding it. A deep groove with a lipped front edge takes a phone upright for video calls or on its side for standBy and night-clock mode, and it fits anything from a small handset up to a Pro Max. Printed in PLA at 0.2 mm layers, 15% infill, no supports. It is designed for a wood-fill filament, which gives it the grain it is named for, though any matte colour prints just as well. The picture is a render of the printable model - real photographs of the print go up once the first one is made.

Design by M_LAB

A six-can holder that spins: six runners hold the cans and the base turns, and it uses very little filament for its size. Four pieces. Shown as a render, not a photo.

Design by JEP0405

Wet gloves dry upside down on six tapered, vented posts, over a 4x10 inch floor vent. A glove's cuff slides over a post so warm air from the register goes up through the post and through the glove, drying the inside as well as the out - which is the part that stays wet. The tray is a colander: a lip catches a dribble of water, and a grid of drain holes lets the air up and the water down, and each post drains through its own cup. Bottles and cups fit the posts just as the old stand's did. Sized to sit inside a 4 by 10 inch register, printed in one piece with no supports and nothing to assemble. The photo is a render of the printable model - real photos of the print go up once the first batch comes off the printer.

A dog's head that sits on top of a straw, ears up and nose forward. Shown as a render, not a photo.

Design by Morganja

A fold-over bag clip in one piece, with nothing to assemble: two slim bars on a round hinge, and a hook at the far end that shuts them. Roll the bag's neck over, slide it in side-on between the bars, and press the hook home - the knob at the end of the curl rides over the upper bar's tip and drops into the groove cut behind it, so the clip is held shut by the hook and not by the moulding. Flex the curl back off the tip and it opens again. The hinge is a disc with a hole through it, so the clip hangs on a keyring or a cup hook when it is not on a bag. It prints flat as a single piece with no supports, and PLA holds fine while PETG survives the dishwasher and takes more flexing. The picture is a render of the printable model - real photographs of the print go up once the first batch comes off the printer.

Two bands that print as one piece: the finned outer ring's ridge sits in the inner band's groove, so it is locked on but free to spin, with no bearings and nothing to assemble. The groove is a BALL RACE - a circular channel, with the ridge as the same circle held 0.4 mm off it - so the surfaces the two parts face each other across are vertical, which is what lets it print in place and still turn. The ring is 27 mm across and stands 7 mm, and the fins are trapezoids: wide where they join the sleeve, narrow at the tip, so nothing on it is a blade waiting to be knocked. It comes in three sizes, 16.5 mm (US 6), 18.2 mm (US 8) and 19.8 mm (US 10) across the finger hole, all at the same price, and the download is a 3MF with a plate for each, so you can print whichever fits - or all three. Print it with a brim and z-hop switched on: a small ring has a small footprint, and z-hop keeps a moving nozzle clear of what is already printed. The STL on its own is the smallest of the three. The photo is a render of the printable model - real photos of the print go up once the first batch comes off the printer.

A Jeep grille that rides on top of a straw, seven slots and all. Shown as a render, not a photo.

Design by Morganja

A bag peg that works like a clothes peg: two arms on a printed pin, so the ends you squeeze and the jaws are on opposite sides of the pivot, and squeezing opens the jaws. A disc on the upper arm turns inside a socket on the lower one, printed in place with a quarter of a millimetre of air round it - press the peg open and you can feel the pin move. Behind it one strip sweeps round and back to the other arm as a scroll you can see through, and that scroll is the spring: it closes the jaws and it is what you feel working when you squeeze. The mouth is a square-wave channel cut through both jaws at once, so the two sets of teeth come from the same cut and interlock - every tooth of one jaw stands in the hollow of the other - and along the outside of each arm, where a thumb goes, a row of sawteeth bites into the silhouette so the peg does not slip in your hand. It prints flat as one piece, no supports, nothing to assemble. PLA holds fine; PETG survives the dishwasher and takes more flexing. The picture is a render of the printable model - real photographs of the print go up once the first one is made.

A heart that sits on top of a straw, wide and low, catching the light as the cup moves. Shown as a render, not a photo.

Design by Morganja

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 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 print-in-place bag clip: the hinge prints shut and then works, so there are no pins and nothing to assemble. 3.2" long, 1.2" wide. Shown as a render of the printable model, not a photograph.

Design by printerforge

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 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

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

A bookmark shaped like an alligator, with the jaw clipping over the page and the body lying in the gutter - so it marks the page and the line at once. 3.9" long, printed as a body and a jaw. Shown as a render, not a photo.

Design by 3dprinting

A little hand that clips onto the page and points at the exact line you stopped on - so a bookmark marks where you are, not just which page. 2.8" long, printed flat with the fingers already free. Shown as a render, not a photo.

Design by helder.bernardo

A flat page marker with a fox carved in raised relief across its face - it slides over the page and the design reads against the paper. 9.4" long and 2.7 mm thin, printed flat 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 shadow.lune

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. Shown as a render, not a photo.

Design by astavr

A small hook that sticks to a desk or a shelf edge with tape or a screw, for keys, headphones or a cable. 2.6" wide, printed in one piece with a flat back that sits flush. Shown as a render, not a photo.

Design by schiko

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 paw that rides on top of a straw: the straw passes through the middle of it, the paw sits above the lid, and the raised pad and four toes catch the light as the cup moves. It is made for the 10 mm Stanley straws, 3.5" tall by 1.6" across, and it prints in one piece. Shown as a render, not a photo.

Design by Morganja

A pair of lips that sits on top of a straw: the straw passes through the middle and the lips ride above the lid, catching the light as the cup moves. It suits the 10 mm Stanley straws, is 3.9" tall by 2.2" across, and prints in one piece. Shown as a render, not a photo.

Design by Morganja

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 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 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 plump bee that clips onto the top of a straw, wings raised and its stripes cut deep enough to read across a table. It suits the 10 mm Stanley straws, is 1.6" by 1.5", and prints in one piece with no supports. Shown as a render, not a photo.

Design by Morganja

A pencil cup wrapped in overlapping scales, so it reads as a little pinecone on the desk while holding a fistful of coloured pencils. 3.3" across and 3.1" 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 impresionao

A thin blade for digging the lint out of a phone's charging port, with a hook at one end and a flat scraper at the other. 34 mm long and a fraction of a gram, so it prints three at a time in a minute - one for the desk, one for the car, one to lose. Shown as a render, not a photo.

Design by eclien

A flat floral bookmark: one thin spray of three openwork blossoms and leaves that lies between the pages and reads against the paper, marking the page without thickening the book. 5.9 x 4.4" overall and 1.6 mm thin, printed flat in one piece in a few minutes. The picture is a render of the printable model - real photographs of the print go up once the first one is made.

Design by Rankhispano

A bookmark of a book with a coffee cup resting on the stack - flat, 3.7" tall, and thin enough that it does not mark the pages. Printed in one piece in about a minute. Shown as a render, not a photo.

Design by giessener

A flat key tag that holds the key by its bow rather than its ring, so it lies flat in a pocket and does not rattle. 2.2" long, about 1 g of plastic, printed in one piece. Shown as a render, not a photo.

Design by Katejot2017