I like the "build new bikes out of busted old ones" concept, as applied to computers. Hell, I do that on my free time anyway, and my grandmother is currently on her longest elapsed time between complete computer meltdown. That'd be a good way to supplement income.

Also, though I haven't had a lot of luck there myself (being of average height, and male), we have a similar bike Co-op here. (www.offthechainak.org)