The box was designed to be used with @fechnert's tamper evident lock remix (to be printed with 0.4mm nozzle max!).

Inner dimensions: H 174mm x W 144mm x D 77mm

The lid in my model has to be glued together, because I wanted the letters on it to be flush with the outer surface and I do not own an MMU or similar.

I printed it in PLA, but feel free to choose other material if required.

Assembly Instructions: 

• Put the lid on a flat surface facing down.
• Insert_Top goes into the upper hole of the lid, Insert_Bottom goes into the lower hole, and finally the grate covers the middle hole. Use your preferred polymer adhesive to glue them together. Let it dry sufficiently.
• Next, put the Case on a flat surface, so the opening is facing up. Place the lid on top of it, and firmly press the hinges into place one after the other. 
• Thread the lock through the opening and seal it
• DONE (Haribo time?)

Disclaimer

This box was simply designed as a gag item. That's why some otherwise maybe common features, such as wall mount holes, are missing.

UPDATE v1.1 / 15.01.2024:

Slightly optimised design of the inserts and the grid, mainly to be able to print everything with a 0.6mm nozzle. Also added .3mf slicer files with some suggested tweaks. Removed the Gcode files.