Despite their chiefly recreational purpose, inflatable bounce castles were originally used to house child princes prone to foot-stomping tantrums. Preserve brittle floors with today's Groupon: for $20, you get six Pop-N-Play bounce passes to Jump City (a $42 value). Pop-N-Play times are 9:30 a.m. to 11:30 a.m. and 1 p.m. to 3 p.m. on Tuesday and Thursday, 6:30 p.m. to 8:30 p.m. on Friday, and 4:30 p.m. to 6:30 p.m. on Sunday.

At Jump City, sock-footed youths run rampant amidst nine inflatable constructions, from moon-bounce castles to plush obstacle courses. Children and nostalgic astronauts relive the first sports event on the moon in the bouncy basketball court. A giant Twister board limbers little ones, a climbing wall safely prepares children for the corporate ladder, and the in-house air-hockey table facilitates frictionless puck slapping. Customers may use the six passes across several visits, or bring a troupe of kids for two hours of bounding and hopping.