Hard case specifically sized for SD cards, but can be used for anything. No supports required, any material and any infill your heart desires. You can either print the "Assembly" file that contains all necessary parts or you can print the parts individually. The hinge works best if you put a small dot of superglue on the inside flange of the pin to keep the pin from rotating and falling out.

**Update: I have added two V2 files (assembly and lid) which have a tighter latch for higher quality printers.