I have joined a site called Recycle Bank. This site is very interesting. It has a lot of information about recycling and ways to be more "green". You can pledge different actions and accumulate points. Then you can trade in your points for different items. So far I have received a couple of coupons for Coke Products for Buy 1 get 1 for Free.
If you are interested in joining you can use my referral site and each person that signs up I earn 10 points. If you would like to join you can click here Recycle Bank.
Right now they have a special promotion going on called Green Your Home Challenge. You tour different rooms and take quizes and pleges to earn points. Right now the kitchen and living room are available and you can earn up to 90 points just by touring the rooms.