This is what appears to be a perpetual motion machine, in which a marble rolls down a ramp and is launched back to the top to repeat the cycle endlessly. Of course if you know anything about the laws of physics, you probably know I’ve been trying to invent a pair of x-ray glasses for years now. But enough about my life’s work, there’s actually an electromagnet and hidden battery in the wooden base of the unit that accelerates the metal ball enough to repeatedly make the jump back to the top over and over. At least until its battery dies. And then what? Exactly — the perfect opportunity for an Energizer Bunny commercial.