I wanted something stylish to store small items and to be able to stack them nicely when I eventually print way too many of them (already happening).
I made two versions: Stackable Storage Cube - Has chamfers for stacking them on top each other nicely. Storage Gift Cube - No chamfers for stacking if you just want to have a nice little gift box to give away.
Print the bottom piece as it is and the top piece on its full flat side. No support needed.
The two cube pieces snap nicely and tightly together. The triangular accents function as latches and to open, just press down on them while pulling the halves apart. I didn't want the cube to be wobbly so there is no tolerance added between the lids, only 0.1mm at the accent/latch edges, so keep that in mind; you might want to adjust the x-y-compensation a bit depending on your printer.