Mama mama maMA! A year from September the older one will start kindergarten and the younger one will be old enough for preschool. I also run the household, which takes some doing.
Meanwhile, I write some articles for the local newspaper and magazines, and pick up little bits of other work when they happen along, all very, very part-time.
Pre-kids, I had a wide variety of day jobs, some of which were better than others. TEFL in China could have been good if it weren't so isolating, and if I'd stuck with it longer. Real estate sales was among the worst because I was always working on spec -- way too much stress, not to mention some of the annoying people I worked with (Most of them were fine, but a few were shuddersome).
I think that if I were physically up for it (starting to get a little old, here) farm work or landscaping might be a good day job -- low pay, but a nice seasonal rhythm in parts of the world where everything freezes up in winter. You wouldn't have any energy to spare in spring, but could cut back to part-time or light full-time in summer and fall, then have winters to hole up with your computer.