I've been doing Pinecone surveys for a few years now. They sometimes send out household questionnaires, wanting to know about your buying habits. Other times, they send out concept studies...for these, they pay $3. I get about 1 or 2 a month. They deposit it into my PayPal account a few days after the study is completed.
I've also got a ton of DVD's listed on SwapADVD, and don't usually ask for any in return. So I've got 28 credits right now from trading DVDs, and decided to sell them off today. I sold a bunch over the fall, but used that money to catch up on bills. Now, we're caught up and extra money goes straight to our debt snowball! I just sold 5 of the credits...easy $20. Hopefully I'll have some bites on the remaining ones and sell those off.
But I just checked my PayPal account, and saw a decent balance in there- $47.72! So if I take that, plus the additional $90 or so that I'll get from selling the rest of my credits on SwapADVD, that'll be $137.72 to put towards my smallest bill, making it almost paid off!! That's so awesome!