My son's daycare used to have the tumble express come in once a week.  He loved it!  He couldn't wait for Tuesday so he could jump on board the tumble express and (as he said) "play, play, play!"

http://www.tumbleexpress.com   A Tumble Express Instructor will lead up to 15 children at a time, in a fun stretching warm-up exercise. Children will be lead through a series of obstacle courses and have an opportunity to try all of the equipment! Games and music will be incorporated as well. The birthday child also receives a Tumble Express T-Shirt! Party Bags will be provided for the entire party.  A fun time is waiting for your child on Tumble Express.

Tumble Express is a gym on wheels equipped with: Tumble Mats, Rings, Zip Line, Balance Beam, Climbing Ropes, Slide, Trampoline,  Monkey Bars, Rock Climbing Wall, and lots more!

Tumble Express is also available for corporate events, company picnics, summer camps, church functions, and other special events.