Inspired by the magic card Mind Bomb. Here is a deck box. The cavity for the deck is 70mmX70mmx100mm. In the images shown there are standard cards in the cavity so you can get an idea of how big it is. I left 2 cavities for maginets. 12mmx2mm round magnets should fit inside those holes. You can print this with no supports but the the bottom of the deck cavity portion will have a rougher surface than the other parts. You can use supports if you want for that portion. The rest of the box does not need supports.