Inspired by https://www.thingiverse.com/thing:4835208.

A case for the Corne LP PCB/plate from boardsource. It may work with other Corne PCBs, but it hasn't been tested. Designed for 10mm round rubber feet on the outer side and M5 screws/threaded inserts on the inner side. PCB is secured using M2 standoffs.

The Fusion 360 file has parameters to change the size of threaded inserts/rubber feet used.