Folks at Imagination Playground and KaBoom have developed a new set of tools for the creative youngster on the playground. The bright blue, soft, water proof pieces give kids a chance to move, and create in endless ways.This is not quite nature based, but it is fun and stimulates creativity and cooperation. KaBoom calls it a combination of sand, water, and loose parts that can be used anywhere at any time. Great news for urban, under served kids.