One method, if it can really be given that much credit, I have been using is uPromise. When you make purchases starting from their web site, a percentage is given back to the college fund. Most stores do this, but not all. So if you are interested in helping out and shop online already, you can use this guest link. You don't even have to join uPromise!
In other news, a recent picture I like:
|Tradescantia pallida, or Purple heart.|
Oh, and it's 2011. How did that happen?