Hippyshoppers will no doubt have seen solar powered clocks, water powered clocks and possibly even fruit powered clocks - but the new green clock on the block is mud powered. Obviously no batteries are needed - instead the clock is safely powered by metal electrodes and yes you guessed it, mud. Perfect for a boys bedroom or your garden shed (close to your energy supply) - this invention has been dreamed up by Middlesex University Teaching Resources. Both educational and fun, it is suitable for ages 5 and up. Available at the Green Shop, priced at £10.95 (mud not included). [Ella]
Related Story - Age of Aquarius
From: ECO CHRISTMAS GIFT GUIDE: 5 gifts for him