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 taught computer classes for multiple for-profit schools without a degree. Not sure it was worth it though. ¯\_(ツ)_/¯