More of an observation than a suggestion, but literally every single organisation (businesses, educational institutions, community groups) that I've been involved with, has had technical stuff that could be improved to help with the core mission. Often, those technical issues aren't front of mind for other people in the org, but someone with your technical skills and an understanding of the organisation will see the issues and be able to improve things. A successful technical fix will quickly have people bringing you new things to work on.

At this stage, I've got a full time job (and I'm pretty burned out, frankly) so don't take on those technical things as I come across them. But, it sure feels like just engaging with them (or not saying "no") could quickly turn in to a sort of technical odd-job-fixer/consultant role.