MTG oversized D20 dice box

This is a box that fits six oversized spindown lifecounter dice from magic the gathering fat pack bundles.

The little holes around are for fitting magnets into
* r = 4 mm
* h = 3 mm

The cover has a little bit of room to put some foam inside, so the dice won't rattle when transported.
The piece of foam I used is about 10 mm thick

Tinkercad link:
https://www.tinkercad.com/things/8GQKbwHIT7V