A gigantic gumball machine. It’s not the first place one expects to see children ricocheting about. But when it’s inflated and part of Jump n Jammin Play Gym’s 13,000-plus-square-foot fun house, it makes a lot more sense. Inside their climate-controlled facility, parents chase after their sock-clad kids as they race from air-filled obstacle courses to inflated trains and circus tents during open-jump hours. After all that exercise, kids lope into the game room to hone hand-eye coordination playing Wii games such as Mario Kart on 47-inch LCD-screen TVs. They can also twist handles at foosball tables, smack a puck during air hockey, and bang drums during games of Rock Band, a video game that fosters rhythm and an appreciation for feathered hair. The kaleidoscopically colored facility can also be a birthday kid’s personal wonderland with party packages, and during the summer, Jump n Jammin’s team adds slip ‘n’ slides and splash pools to parties and organizes summer camps.