The apple season is on and one of our friends at instructables have made a great USB device with an apple.

The Apple powered by USB, will vibrate when anyone grabs for it, and will stop this annoying behavior when the accused stops thinking about eating this apple and pulls his hand back.
The concept is not that difficult and you may make it in just an hour or two. For the device, you can use both a real and a fake apple. (A real apple won't last that long though!)
All you will need apart for some things available in your garage is a 'Capacitance Sensor Chip', some copper foil, a vibrating motor, a PCB and a soldering iron. And obviously an apple.
Got ready with the things...? Click here for the detailed procedure.
Thanks: randofo
Via: engadget