I made some 3D-printed nesting keycap trays

I've printed up 7 of these, plus I have a lid and one less-satisfying prototype from my diode laser. They fit in the footprint of a sheet of US Letter paper, hold a little over a TKL's worth of keycaps, and use about 1/6 of a 1kg roll of filament, so maybe USD $3 per try with the cheap PLA I always buy.