Recycle Bank is a great website. They give you information about being greener and you accumulate points for reading the short infomation. In return for the points, you can get great coupons for restaurants, groceries, and other goods. If they have Recyclebank in your area, they will even give you points for recycling! I have earned points in other ways, like recycling electronics and buying a specific box of Kashi cereal with a code inside.
Check it out:
Right now, they have a 'Green Your School Challenge' and they are giving tons of prizes and points away.