Quantity   Component name
1 × RadioShack USB Postal Scale http://www.amazon.com/USB-Electronic-Postal-Shipping-Scale/dp/B000EREN4S/ref=sr_1_1?ie=UTF8&qid=1434146798&sr=8-1&keywords=B000EREN4S&pebp=1434146802783&perid=969172520E604581874A
1 × HDMI cable Anything works, don't bother with Monster cables.
1 × Adafruit HDMI 4 Pi: 5" Display (no Touch) w/Mini Driver - 800x480 HDMI https://www.adafruit.com/products/1928
1 × Raspberry Pi 2
1 × Webcam A $20 one works fine.
1 × Flashlight You know those 6-LED ones you find everywhere?
1 × 60mm green arcade button https://www.adafruit.com/products/1193
1 × 60mm red arcade button https://www.adafruit.com/products/1190