This simple case features some barrel-hinges and magnets to securely keep shut. The form is intended for a cheap, but very popular Chinese audio player I got of Amazon.
This build was done from 6.3 mm beech plywood using a desktop cnc-machine by Stepcraft with a 3 mm spiral toothed end mill. A vacuum machine bed simplifies the process significantly because you don't need to camp the material, thus it stays pretty flat. Furthermore, I don't need tabs on the parts resulting in less sanding.