Wonderwood in Amsterdam send two pieces of rectangular wood and asked us to come up with an item for they Exhibition 10 years of WonderWood in 2009.

We send the ultimate decision maker based on the cunning use of a wooden ball, two pieces of wood, some sticks and gravity.

Featured in the book: Little Wonders
http://www.wonderwood.nl/web_ww10/ww10_index.html