One of the PTO Moms found a shopping rewards program website on ebay. Another community had built the model and she hooked up with them and learned the model in a few days. It's working like a charm. She is now getting other schools involved, too. I personally shop online at old navy and the gap and the school gets 4% rebate. Last year we raised over $16,000. We tried other third party shopping sites like school pop....but nobody seemed to use it. However, when the program was run by a local mom it just took off. The program allows us to buy the things we would anyway and still contribute.
We also have our local grocery stores rebating 1%!
Figure out how to use your collective purchasing power.