Kit that lets you build a "chaos machine"

My friend William Gurstelle told me: "Remember when you assigned me the Make magazine story about the Chaotic Double Pendulum? Well, I always thought that was one of my very best projects. About two years ago, I invented a toy based on that project and called it the Chaos Machine. I've been working with Fat Brain Toys on the project for quite a while and lo and behold, as of today, we're ready to go.

Chaos Machine ($(removed))