Take a look at this: http://www.gadgetsquick.co.uk/product_thumb.php?img=images/powerball-neon-blue-litup.jpg&w=214&h=200 I am looking for ideas about a physics project. The theme is "future household energy concepts". I found this thing from a http://www.gadgetsquick.co.uk website. How does this thing work? I wanted to simulate it into a mini-house model so that it functions like a power generator. Anyone can lead me to a good website with step by step instruction on how to make one of that?