A puzzle challenge I made for my high-school class. Both boxes require you to find the optimal way to pack the cubes in order for them all to fit. The box for 11 and 10 are slightly different in size but use the same size cubes. I scaled the whole thing up 175% for a good sized small puzzle but should just about work at any scaling.

Creality

Ender 3

Doesn't Matter

No

10