QR generators I found were either fixed templates or needed you to fight a slicer to get two colors right. This one runs in-browser: paste any URL, WiFi string, or text, and it lays out a real scannable QR raised in a second color, with an optional title, corner styles, and back magnets. This plate links an Instagram profile. Long data auto-grows the plate so modules never print too small to scan. Free, no signup, at chamfer.cc.

I built Chamfer, a free browser STL generator, since gridfinity didn't fit the odd trays in my stackable tool box. Set width/depth/height/compartments in plain mm, no CAD needed, export STL or a two-color Bambu 3MF. This one: 120x108x64mm, 2 cells, cut corners for finger access, stacks via a foot+lip that locks instead of sliding. Different tray size? Just change the numbers at chamfer.cc, no remixing needed.