Today, Wednesday Wonder brings you the Wintergatan Marble Machine, handmade by musician Martin Molin of Sweden, who makes delightful use of 2,000 steel marbles, tracks, pulleys, funnels, a vibraphone, and more. Beyond all that, what makes this creation qualify as a wonder? Start the 4:32-minute video and hear why.
My thanks to This Is Colossal! and Wired UK for the link.