Shop for Run Mat at S&S Worldwide. Get their motors runnin' and movin' as a team! Get their motors runnin' and movin' as a team! Kids (or adults) walk along with the lead person pulling the mat down to keep it moving.
Bottle Bank via Martha Stewart: transform a used plastic bottle into a cute piggy bank. Could use same idea to made little containers for kids to store their collections too (use bottle with wider opening and don't make slot)