I ♥ my local interlibrary loan program.
I'm still trying to come up with some ways to make some extra money on the side, though. Donating plasma would definitely be an option, but since I work at the only plasma center around, I'm not allowed! (If you're interested in it, though, feel free to ask me about it! It's actually a pretty great way to pick up some cash if you've got the time for it, and plus, it's a nice thing to do.)
I gave mystery shopping a try, but the shops I can find around here are few and far between, and only pay about five dollars, for what adds up to about three to four hours' work between doing the shop (to super-exact specifications, because otherwise you don't get paid or reimbursed) and reporting it.
I've got a plan I'm mulling over to hire myself out as a research assistant for the students around here.
How about you guys? Any tips for making money on the side?