I'm self employed. Some of my projects (mostly Ejecta[1] and jsmpeg[2]) spawned a lot of contract and consulting work lately. I'm also selling licenses for my games[3] so other gaming sites can host them and the AdSense banner on ZType[4] provided an impressively stable ~$500/mo for the past few years.

[1] https://github.com/phoboslab/Ejecta

[2] https://github.com/phoboslab/jsmpeg

[3] http://phoboslab.org/#games

[4] http://zty.pe/