i use to fix blown fuses of my house with a nickle:)
Uh... Replacing a fuse with a nickel is BAD.
Sure it works but its BAD.
Fuses are there to blow if there is a power surge to protect electronic items in your home.
Power surges cause the bit inside to melt and stop the connection.
A nickel won't melt. Thus going straight into all your stuff.
Possibly resulting in dead electronics/home on fire O_O.
Be careful mate :P.