This post is, I think, an excellent demonstration of what I keep telling people: if you can commit even a little bit of time over a long period doing something that people aren't voluntarily doing already, you can do something pretty useful.

For this patience claim, I usually use examples like Wikipedia articles or FAQs or self-experiments, but this page is also a good example: for a bit of menial annoying (but otherwise undemanding) work, John has materially assisted me in multiple articles (sunk costs, iodine, and lithium among others).