This is a Raspberry Pi Pico mounting bracket for the Nintendo GameCube console that uses M2 inserts and screws.
Inspiration for this model was this existing bracket: https://www.printables.com/model/242361-pico-boot-stand-mount-bracket-for-gamecube-mod
I've used Ruthex M2 threaded inserts but I think most similar ones work here. STEP files included.
The author remixed this model.