Team 1306 runs a summer camp for elementary and middle school students every summer, and this year, it's expanded to 120 slots. It's a great way to introduce kids to robotics, and last year, we made around $30,000 from it, making it a huge source of funding for the team. I'm not an expert on how it's run, but I can give you a link to our website page about it, and the email address of the teacher who started the summer camp.
Website:
http://badgerbots.org/summercamp.htm
Email:
bsenson@madison.k12.wi.us