1 glass, a matchbook, six coins, and an ashtray with water.
Bet your friends one drink that you can get the water out of the ashtray using only the ingredients mentioned and without moving or tilting the ashtray.
Make sure ashtray is filled with at the most, a quarter of an inch of water. Stack the coins in the center of the ashtray so that the top two coins are above the water. Place four unlit matches on top of the coins. Light the matches and immediately cover the flame and coins with the glass. The water will be drawn into the glass. You win !!! collect your bets.