I want to teach a class on repurposing electronics. We could start out just taking some broken things apart and seeing if we can fix them, but every student would have to pick something to repurpose or revive as a semester-long project. Maybe they want to turn an old propane lantern into an LED lantern, convert a cordless drill with dead nicad batteries to lithium, or jailbreak an e-bike. Everyone should leave the class with a device or appliance with a new lease on life. A community college should hire me for this
My local community college, you can teach pretty much anything through continuing ed, if you bring in a minimum number of students
Parks and rec classes might also be an option, although it depends on who uses them where you live, whether that is your demographic