Try some online surveys. They really won't add up to much, but they do add up to something.
Cam shows bring in a good bit of money too. Several of my friends have looked into it.
If you've got any special skills try offering those around too. Not just restricted to Neopets however.
Graphics design, web coding and all that stuff is sought out in a lot of places. I think some people pay pretty well for Tumblr backgrounds but I don't know much about it.
Another thing you can do that isn't online is finding a recycle place that will buy up your Aluminum and plastic bottles. Go around and see if you can get can's/bottles from your neighborhood from people and just tell them you'll take it out for them or something. And once you get a good bit of the recyclables, take them to the place near you that'll buy it all off you. That'll be cash on hand the moment you walk away.