Here is a sweet K’Nex deal at Amazon. You can score the K’NEX Robo Smash Building Set for only $7.99. Build your very own robotic primate with real motorized action and watch as it comes to life with the K’NEX Robo-Smash Building Set. Part of the K’NEX Robo-Creatures Series, Robo-Smash not only looks like a high-tech robot, but moves like one, too: featuring a battery-powered motor, your creation smashes the ground with his strong arms to hop across the ground like a large lumbering gorilla.