I went to the link posted on this site... select kitchen for the room, and one of the plus signs will lead to a quiz about organic stuff.. the answers can easily be guessed correctly.. then you get 25 points! http://www.freestufftimes.com/06/45-free-recyclebank-points/
If I remember correctly, there is a short video to watch where it tells you the answers. Just 3 questions to answer... not sure what happens if you get one wrong!