OP, I don't know if this will work for you, but one way I have gained a bit of extra income is teaching classes to senior citizens. My area has a Lifelong Learning program affiliated with a local university. I simply called them and offered to teach. I am a graduate student and I teach Drama and Literature courses, however there are other teachers who teach all kinds of things, from sailing to gardening, etc. The baby boomer generation are overall very active and engaged and willing to pay for interesting classes. I get to pick a convenient time to schedule my class, and I have enjoyed it a great deal. So if you have a teachable skill, it might be something to look into.
Working artist mom with scientist husband, one nifty kid, A. (born 8/11), a couple of cats, and a new baby on the way!