Easy Coin Vanish Magic Trick
The Effect:Borrow a coin and have it marked. You say that you are always losing money through a hole in your pocket and you drop the marked coin into your pocket. "What's weird", you say, "is that the hole isn't in this pocket (the one in which you dropped the coin), but in this one!" You lift up your other foot and the borrowed coin is there! A coin is placed onto the table and it vanishes.

Method:

Put the coin onto the table with your left hand.

Say something like "check this out" and reach over with your right hand.

Then press down on the coin with your middle, index and third finger with your hand and arm parallel with the table.

Slide the coin towards you remembering that it should be completely covered up.

Slide the coin off the table so it falls on your lap without the spectator seeing.

Touch your thumb to your middle finger as if you are picking up the coin as it reaches the edge of the table.

Keeping your fingers still closed, stare at where the coin should be as you slowly move your hand away from you back to about 6 inches from where the coin originally was.

Start moving your thumb in a circular motion as if the coin is disappearing.

Slowly turn your hand around and spread your fingers apart.

Now the rest is up to you.

The more surprised you act, the more people will believe that they have seen a real coin vanish.

source: allmagic.com