Box for drill bits and other tiny Dremel tools

Most of my drill bits got broken not by drilling, but by laying around on my working desk though. So why not building a box where they can rest safely till I need them?

Included are the FreeCAD source files if you would like to modify it. The upper shell is made in two parts witch I glued together. So I was able to print clean parts without any support.
The inlay is 4mm thick to prevent the bits from axial moving. This is maybe the main reason for broken drills.
The hooks need some easy