The Flip Factory is a gymnastics facility with a few added features designed purely for energy-burning birthday party fun. Parties cost $295 and include over an hour with 15 kids on the gym floor plus 45 minutes in the party room afterwards. Parties run on Friday, Saturday and Sunday afternoons for the majority of the school year. Book way in advance and arrive on time (not early). Bring your own food, loot bags and lots of water.