The lazy days of summer are winding down. If your kids aren't back to school already, they will be soon. Labor Day, the first Monday in September, signals the last official hurrah of summer. Why not round out the holiday out with a backyard bash or beach party? Here's an easy cheap kids' party plan for children in preschool to middle elementary. Use this plan for an earth day party, too. Easy, cheap kids' party: Farewell to summer backyard shindig or beach bash