Gonna shill my project, a 34 key solar powered split keyboard https://github.com/cjshearer/cweep.

Each half should end up just a bit wider than a smartphone (114mm x 86mm).

I'm still working on the case generation, which is intended to have a metal backplate for magnetic mounting, but I've gotten distracted developing a generic method to convert kicad geometry primitives to cadquery, so others can benefit from this workflow that uses the PCB geometry as the source of truth for generating an enclosure.