Excellent example of the Dzhanibekov effect

https://en.wikipedia.org/wiki/Tennis_racket_theorem

Land Survey. I stumbled into it by accident and it is perfect for ADHD folks. It’s a combination of cartography, history, law, geometry, geography. You can be in an office, you can work outside. Best part is, you can get licensed with out a degree in a lot of states. And, even if you don’t get a license, you can make a decent living at it.