Until recently I worked in a care home for severely autistic adults, as a care worker.
Before that I did all sorts of stuff, including private tuition (mostly languages, bit of English and science), translating, transcribing (writing that's v.messy or damaged paper, hard to read etc such as old manuscripts), research and bar work. I've also done handwriting analysis professionally, both for ordinary people who just "want to know" and for the police, historians etc.
I enjoyed the bar work and transcription most.
Now I'm full time homeschooling my kids. I'm personally teaching them all subjects of the curriculum plus others not covered at school (citizenship, life skills etc), which entails all the research, preparation, planning and marking of any teaching job. But for 11 subjects, up to British GCSE level, which I think is equivalent to round about high school diploma in the US. It's a good use of a polymath's skills, challenging and flexible, though not well paid... not paid at all in fact
But if I did it for someone else's kids, I'd get paid a fortune for it.