A simple acceptably compact Dice Tower / Dice Storage that I made up in Fusion360.
There's a spot to put a 5x1mm magnet to keep it closed. However my tolerances were tight on the one I printed which I didn't need the magnets. Opening and closing it a few times will loosen it up. However I sanded the holes on the case side and added a little graphite powder for a little extra help.
I printed the outer shell on its front side (easy)
I printed the chute with the magnet hole facing up and using 90 degree (gaps facing out) support on the inside so I could squeeze them together with pliers and remove them easier.
Filaments.ca Econofil PLA