Instructables
video Cylon Pumpkin 2012
My girlfriend and I spent a few days before Halloween creating a Cylon Pumpkin. We based the design on the one found here: http://www.instructables.com/id/Cylon-pumpkin/. However, we added an Adafruit Wave Shield and LV-EZ1 ultrasonic distance sensor to add sound and a trip sensor.

Many thanks to ukavu for design tips!
Haha! Awesome pumpkin :)