Have you thought about teaching private music lessons? I teach guitar to 7-8 students, it's nice to have the extra income and teaching music to kids is a welcome break from coding.
You know, in the past, I've always briefly considered it as an option but seen the hourly rate as so much lower that it didn't seem viable. But right now when I'm experiencing coding burnout, the idea strikes me a bit better. I have this awesome 6'4" grand piano in my living room - it'd be nice to let some other people enjoy it. I'll consider it more. Thanks for replanting the seed. ;)