Slic3r with integrated electronics and Nonplanar slicer (see branches) - Zip-o-mat/Slic3r

Stackable box system with 80x80mm base size.
The size of individual boxes is always a multiple of these dimensions. Thus they are compatible and can be stacked on top of each other*. One slot at the front side and one slot at the back enable for inserting lables.
Variants height 60mm:
small: 80x80
medium: 80x160
large: 160x160
In addition, two compatible design versions are available:
(o)pen: With front access, allowing for picking items through an opening in the front
(c)losed: Without front access.
Filenaming:
'box_c80x160x60.stl' stands for closed version, size 80x160x60mm
*Compatibility exception:
box_o160x160x60.stl has an open front and thus only other 160x160 boxes rest stable on them.