I call this the "The Casket of Fate". It holds 40 12mm dice perfectly.
The locking mechanism is 2 super magnets repelling each other to hold the locking bolts in place, it gives the feel of a spring loaded mechanism without the springs. Very Necron :)

Creality

Ender 3

Doesn't Matter

Yes

200

20

a little sanding is required on the locking bolts if you have any print spread.
If you have different magnets you can swap out the mag holders.
I printed the scarabs at high quality and the casket at low quality just to save time.