This hyper minimalistic box with super sexy look for saving small things has been designed for 4 neodymium magnets (diameter 5mm, height 2-4mm). If you want it to be "bulletproof", use 100% infill and at least good quality PETG. I also tried Nylon and CarbonFil and it performs extraordinary well.
Check out this Video to see how super simple it is to use.
As always: print with LOVE, LOVE, LOVE ;-)
And c'mon boys and girls, leave your comments and good reviews! :-)