In September, the Imagination Foundation will launch the Global Cardboard Challenge, inviting the world to play and foster creativity and entrepreneurship in kids. The library is participating by hosting building days and celebrating the National Day of Play on Saturday, October 5. You could build an arcade, a carnival, robots, cars, a spaceship, a maze. Build at the library, or build at home or at school and bring your creation to the Day of Play. For kids of all ages.