Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
Five-Lane Cove Pen Drawer Tray
A 160 x 92 x 15 mm drop-in desk drawer tray with five round-bottomed lanes, 10, 12, 14, 18 and 22 mm wide. Pencils, pens, Sharpies, highlighters and fat dry-erase markers each roll to the middle of their own lane instead of piling up in a jumble. The lanes are sized to a range rather than to one brand, so anything up to about 21 mm diameter and 150 mm long fits. The underside is hollowed with bridged pockets so the walls stay 1.6 mm thick and the plastic stays under 100 cm³.
Tip-Down Dry-Erase Marker Desk Caddy
A desk caddy that holds five dry-erase markers cap-down, so the ink stays in the tip and they don't dry out. It has five 20.5 mm bores, 42 mm deep, and takes caps up to about 20 mm across. In front there's a 31 mm wide lipped trough for an eraser, pens or magnets. The footprint is 128 x 68 mm and the part is ribbed and shelled rather than solid.