How to make a portable fan using a computer fan and a battery

If you have a spare computer fan, 9V battery and a piece of duct tape you can make a portable fan in less than minute. Extremely useful for cooling during during hot days, long trips etc.
User tips:
Marlon Pritchard: you can use pillers [or knife - Krzysiu] to strip wires and avoid smoke
1991fordexplorer: 12V battery from RC car will be even better
krzysiu.net/mis...
Music: Brian Boyko - Folk Song (CC-0: creativecommons...)