Simplified design of the CPU unit that is used in the movie universe of The Terminator.
https://bit.ly/2Wyt2wF

The different areas are split apart so the case can be printed in two colors.

Designed to fit a SanDisk USB stick. https://amzn.to/2WVDr5e

Peel of the plastic cover and bend over the metal like shown in the pictures.
Assembled with hot glue.
But super glue would probably work better as a more permanent solution.