First off, I'm jealous,
**look at the itineraries of university based band camps, mix fundamental playing with fun music and a few activities every day.
** do some type end of camp demonstration for parents
**Think about some master classes with great players playing for them, and answering questions.
**Have a cool camp t-shirt.
**Bring in a motivational speaker
**team building games and activities.
Good luck and have fun!