Another fun place to look for case design would be a web page like INSTRUCTABLES. Lots of people on there make little project cases from all sorts of things like yogurt containers, Altoids tins, etc.
Maybe people could start looking for a container that's pretty close to the right size, but is "garbage" - leftover from something else.
Who knows? Maybe a 12-pack of widgets come in a case that would be perfect to build a controller in?
Hey Paul, getting zapped is NOT fun! You know whats even NOT Funner? 144 volts!!!!
Oh, well, I will not do that again! (Until I get another experimental 144v controller shipped to me again....)