See-Saw Power for Schools

I love ideas like this: Kids playing on a see-saw generate electrical power. Daniel Sheridan, a twenty-three year old student at Coventry University, created this design after working as a volunteer in Kenya. This fits right in with the PlayPump merry-go-round for pumping spring water and the Hippo Water Roller for delivering water. Dean Kamen's water distiller might also interest you. (Thanks to Thomas Kang for pointing these developments out.)