I do bench joinery in wood as well as laser cutting. Like many, I have one of the cheap and cheerful mortise cutting machines, with the square chisels. Here's a simple box to store them.

Materials are 6mm and 4mm MDF, 3mm bamboo kebab skewer (as hinge pins) and a few small rare earth magnets.

Assembly is a simple cut and glue-up. When the glue is dry, take four small rare-earth magnets and glue them inside the front corners to act as a latch.

Formats are Corel Draw X3, then exports as PDF and EPS. Cut the black lines, blue and red are engraves.