I wanted a case for this boost converter: https://a.co/d/hFepbhh
Didn't find one, so I made one.
Very simple, <30 minute print on Bambu X1C printed in PLA.
I used 0.2mm layer height, 10% gyroid infill, 2 walls; but I'm sure any normal settings would also work fine.
M3x6mm (4 or 5mm would work too) screws self thread into the holes to secure it in place.