Interlocking Module Drawer 40mm cube with catch

While searching for a modular drawer system, I couldn't find anything small enough for small parts like all different size of M2, M3 M4 screws. Most module drawer system are 70mm wide, and when scaled down the interlocking parts aren't precise enough to fit. Printing at 100% size just wastes filament and print time unnecessarily, when I only need smaller drawers.

So I decided to remix some modular drawer cubes and improve the following:
- The interlocking is more forgiving to print on smaller size
- There is a simple catch so the drawers don't fall off when pulled out. Not so sure why this simple-to-implement addition is not found on most if not all other drawers.
- The bottom layers that have swollen elephant foot is taken care of. No need for raft to print.
- The protruding interlocks are small and less conspicuous. They can be used as legs for the bottom modules.
- As a result of the small interlocks, the front looks super clean.
- Everything is designed to be printed with