Eco Choices: shopping site
Eco Libris: plant a tree for every book you read.
If you are interested in finding a CSA (Community Supported Agriculture) in your area, click here.
Give the gift of trees.
No impact man: A blog of someone trying to live without any kind of negative environmental impact.
Daily clicks, which includes hunger, breast cancer, child health, literacy, rainforest, and animal rescue. Another easy (and free!) way to donate to causes.
Free Rice: donate rice with every word you get right.