[quadrangle]

Others mentioned this already, but look into home-school co-ops and other networks. If you're lucky, you'll find a situation where you can teach programming and/or music and have someone else with other expertise teach your kids (these can be in larger classes that meet at some community space or different homes). Although the teaching will take some extra energy, the times that the kid(s) are with other teachers are times you can do other things, and that sort of networking will get you more support network, leads to income sources, and help your kids get socialized more etc.

Just one thought. I don't have much suggestions about best income options for you.