Frans was absolutely fantastic at our son's 8th birthday party yesterday. He arrived early to set up, had the kids fully engaged throughout- and not only were they thrilled to make their own goodies, they learn a lot in the process! The Slime oath made me laugh: "I solemnly swear...not to put my slime in the carpet...or the bed...or the car seat..." Brilliant! And what a relief for us parents to sit back and relax while the kids had a whale of a time. The 11 year olds had JUST as much fun, if not more. Highly recommend.