found at Lime Tree Kids
Build your very own wind powered Strandbeest. The Wind Walker moves just by the wind and its own engineering genius. No electricity or batteries needed.
This Machine is a kinetic, wind-propelled sculpture that was designed by physicist/artist Theo Jansen. While the original was designed for the beach, this do-it-yourself version will work equally well on any flat surface. It's perfect for kids or adults and isn't too hard so it won't take more than an afternoon to put together.
Includes: 130 pieces (wind panels, drive crank, mechanical walking pieces) and illustrated instructions
Recommended Age: 8+