I taught real-life in-person survival classes for 5 years - until my boss decided to support his rapist best friend over my coworker (who the best friend raped) and stopped asking me to work for him because I supported the rape victim and accompanied her to the police station and hospital (long story, that).

There are actually some good online classes - one by a woman I've worked with on Masterclass (she's super nice in person) and my personal favorite, the primitive technology youtube channel (swoooooon). https://www.youtube.com/watch?v=-cgQUrdBoaM

I'm afraid I lack the ambition to do anything, ever ;) passive income be damned.