Emergency Survival Whistle From a Beer Can

Came across this rather clever video today on how to make an emergency whistle from an aluminum can from youtube user cutlerylover. This would come in quite handy should you (god forbid) find yourself in a survival situation where you need to make some attention grabbing noise. Watch the tutorial video below.

Original at: http://geek.phatus.com:80/2008/12/emergency-survival-whistle-from-a-beer-can/