Wind-up bedside lamp
People who read in the bed sometimes forget to turn off the light. The key from this wind-up bedside lamp functions as a switch and a timer. Wind-up to turn the light on before you go to bed. The light will stay on until the key winds back. Its main source of power comes from its powerful spring-driven generator. As the high carbon tensile steel spring unwinds, power is transferred to a small dynamo electric generator which produces enough electricity to power of the light.
Source: hulgerisation.comAdded: 28 June 2006