This project uses the video motion blocks, so you'll need a webcam. the food just waits until they sense motion, and then get eaten. I used a wind-up toy to eat them! Here's how I set this up: I put a small box in front of my laptop so that it on the screen it looked like the cheesy poofs were sitting on it. then, I 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.
I changed the food you could eat. Thanks to ericr for creating the original, have a look at it, it's really cool!
