I used to work for a place that did the summer fancy extra-curriculars.

Basically, think a very very fun summer camp, BUT we would package in X service features, one per week. This was a win win. Parent's would pay because kid could put the stories of painting the walls in X town on the application, or cleaning up Y pollution on a beach. And the rest of the times the kids could have fun and learn cool stuff (I'm being vague because I liked the program even though you had to have good money to go).