Forget batteries, plug-ins and controllers. With CitiBlocs, all playtime requires is imagination. A childhood classic gets a green makeover with this 500-piece set made of nontoxic radiata pine harvested from certified renewable forests. Whether little builders are constructing a forest of trees or a sky-high cityscape, these versatile blocks in natural tones offer hours of eco-friendly fun. When playtime is over, they store easily in the included bin.