Two-part case for the CDC badge - https://github.com/riatlabs/cdc-badge/tree/main - that was available for purchase during 39C3.

Requires some hardware:

• 2x M4 nuts

• 2x M4x15 countersunk screws

• 4x M2x15 countersunk screws - probably; haven't acquired yet, and M3 is definitely too large

• 4x M2 nuts

Designed for printing with 2 walls with 0.6mm nozzle; 3 walls with 0.4mm nozzle should work fine as well.