Medium sized law firms (25+ attorneys) are a good place to look. They have a lot of internal business processes that can be wrangled with some fairly simple apps. Not a single person in the whole firm knows anything about computers. Profit margins are fat. If you automate a couple things the managing partner thinks are a PITA, you'll be treated like a god. Also law firms seems especially fearful of tech talent leaving, so I don't even really think you have to worry about a paycut.
This is great advice. I have several friends who are lawyers, and they are just utter and completely non-technical. If you can find a place like this that allows you to work from home, it would be a great job for someone like OP's profile.
More generally still, look at established, unsexy industries flush with (old) money, such as finance, law, oil&gas, government services, infrastructure, real estate...
If you can find a space in there where you can accelerate things just by 5% mostly on your own, you'll find yourself in a highly paid, irreplaceable position soon enough.
Worst thing is: Nobody likes doing these manual tasks. They get the junior/paralegals/interns to do them but they all could be doing more valuable stuff.
