This project uses the video motion blocks, so you'll need a webcam. the cheesy poofs just wait until they sense motion, and then get eaten. @ericr used a wind-up toy to eat them! Here's how @ericr set this up: He put a small box in front of his laptop so that it on the screen it looked like the cheesy poofs were sitting on it. then, he wound up my wind-up toy, so it would walk across the box. When it got to the cheesy poofs, it ate them! Unless it fell off first. Wind-up toys sometimes have a mind of their own.