Can playground equipment be rigged up to generators/ dynamos to harvest energy that a school could then use?
Imagine a roundabout in a school playground that gets played on for about two hours a day. Underneath the centre could there be a dynamo gathering the electricity and storing it? It could be used to power night lights, or other temporary lighting (such as toilets, hallways etc). Dynamos could be attached to swings too. We could even design playground equipment for this purpose where children have to lift, pull, turn, spin, rotate objects or handles during play.