Students from Swiss University ECAL wanted to find a way to use all of the wasted kinetic energy from a rocking chair. Their solution? A chair that knits a hat while you rock.
A spool of yarn attaches to the back, and there is a circular loom on the top. A hanging counter weight moves back and forth as the person rocks, which in turn sets gears in motion rotating the loom and knitting a hat. Click HERE to see a video demonstration.
No word yet on when this item might be for sale, or what it might cost. I will be asking Santa Claus for one, though.