Pennies for the Planet is a very cool site from the National Audubon Society that helps kids to make a difference by either participating in local conservation efforts or by saving and collecting pennies (through their schools, for example) for national and worldwide conservation projects. If we want our kids to care about the earth, we have to empower them by giving them a way to help. Pennies for the Planet is one such way!
Find it Here: Pennies for the Planet