Harness Children Power!

Here is a unique invention from South Africa: A toy that powers a water pump:

Cavorting on a roundabout has always been fun for children. Now pure, clean borehole water can be pumped into water storage tanks while the playground roundabout equipment is in use. The Play-Pump is a specifically designed and patented playground roundabout that drives conventional borehole pumps, keeping costs and maintenance to an absolute minimum, while entertaining the children.