A stay-at-home mom founded Chelsea TreeHouse, a 9,000-square-foot indoor ?unplugged? play space free of any distracting video games or other electronics. The play area is outfitted with slides, swings, bridges, and a multilevel climbing structure, and basketball hoops allows aspiring players to practice slam dunks within eyesight of parents or guardians lounging in leather seating. During birthday parties, groups of kids can take advantage of amenities such as pizza, balloons, and lemonade. For everyday nourishment, TreeHouse?s full-service cafe replenishes energy with healthy bites such as veggies, yogurt, and cheese while parents enjoy more adult fare, such as sandwiches, salads, soups, and Zingerman?s Coffee.