Quantity   Component name
1 × Arduino Pro Mini
1 × 12v buzzer http://www.ebay.co.uk/itm/121531118208
3 × 18650 battery
1 × Actuated switch http://uk.farnell.com/omron-electronic-components/a8g-107-1-24/switch-rocker-dpdt-reset-20a/dp/1740376
1 × Led Fiber Optics / Emitters
1 × Nuts and bolts I got mine from Poundland!
2 × NPN Transistors For controlling the buzzer and the switch
1 × DC-DC 10-32v boost convertor http://www.ebay.co.uk/itm/New-150W-DC-DC-Boost-Converter-10-32V-to-12-35V-6A-Step-Up-Voltage-Charger-Power-/281341818589?ssPageName=ADME:L:OC:GB:3160
1 × Accelerometer http://www.ebay.co.uk/itm/New-3-axis-Analog-Output-Accelerometer-angular-transducer-GY-61-ADXL335-Module-/400514840584?ssPageName=ADME:L:OC:GB:3160