Kids, especially preschoolers and kindergartners, will love sitting — and doing a whole lot more — in the Bilibo Seat ($27). This Swiss invention has won numerous design awards for its deceptively simple approach to seating and open-ended play; it encourages creativity and stimulates the senses. Made of high-density polyethylene, it's also shock-resistant, weather-proof, and one-size-fits-all. Toddlers and second graders alike can pop a squat in one!