Grumpy Old Geeks Media The Great Ball Contraption Media The Great Ball Contraption 2 mentions in 1 episode A video of a Lego ball-moving display shown at Japan BrickFest. Mentions 165: Brexit Through the Gift Shop Jun 24, 2016 1:21:52 This is called The Great Ball Contraption. 1:22:11 A long video of just balls moving around a track.