Dandy's Play Safe Playground Bark is a lovely natural product that is tested for impact so approved for use on playgrounds as a cushioning material - make sure you protect those little heads in case they come off the slide too fast or go right over the bar on the swings!
This is also a decorative bark so it's great for smartening up shabby beds and borders and for surrounding your best plants and shrubs to really show them off to their best.