Like Krazy Straws, kids are deranged contortionists who prove terrible at drinking milkshakes. Redirect your child's manic energy with today's Groupon: for $20, you get an open-gym pass good for five sessions at The Flip Zone in Plainfield (a $75 value). Children must be at least 3 years old.

The gym is open on Thursdays from 10 a.m. to 11 a.m. for kids 6 and younger, as well as Saturdays from 1 p.m. to 2:30 p.m. for kids 6 and older and from 1:30 p.m. to 2:30 p.m. for kids 5 and younger.

The Flip Zone’s 12,000-square-foot activity center bursts at the seams with restless rug rats building agility and confidence on safe and sturdy equipment. A 40-foot in-ground trampoline and a world-class competition trampoline carry youthful tumblers aloft, and the in-ground training pit lets them show off cartwheels and flips without also showing off bruises. Aspiring Olympians can practice each of the events for men's and women's gymnastics or simply hurl thunderbolts across the preschool jungle-gym area. From the observation area, adults watch their fledglings frolic and use the free wireless Internet to research how to feed and care for pommel horses.