I think that teaching classes would be interesting. I have a lot of industry experience, but I never actually got a degree in the field I work in, and I don’t have any sort of degree that deals with teaching. Is it possible to get a job as a teacher without those?
Edit: I’m in the US specifically looking at teaching college courses, but K-12 could be interesting, too.
I used to teach CS to middle schoolers at a private school. Illinois doesn’t require a bachelor’s for teachers at private schools as long as the teacher has “demonstrated competence”. I taught there part-time for twelve years and then full time for a year.