Inspired by their own rambunctious toddler, the family behind Fidgets Indoor Playground created a safe, clean, and fun place where kids 6 and under can let loose. And boy do they let loose. Kids careen down slides, dive into ball pits, and peddle around on tiny cars. For the littlest of the bunch, there's a crawlers-only area, specifically designed to encourage exploration, play, and exercise. As they're capering about, they just might learn something, too—especially at the LEGO tables and imaginative-play areas or during music, art, and crafts classes.