Hamster Power.......

For his masters degree in industrial design, Tom Ballhatchet, 29, has developed an environmentally-friendly paper shredder that runs on hamster power. The rodent has to run flat out for 45 minutes to shred one sheet of A4 paper, but the rewards are great - the the shredded paper that falls onto the base of the cage provides fresh bedding.

Several companies have apparently expressed an interest in turning the working prototype into a full scale production.