Doors that shut on their own are designed that way for a reason: to prevent the spread of fire and smoke in a building. Sometimes you need to hold the door open temporarily, though, such as if you're moving furniture through the doorway. If you're in a pinch and you don't have a wedge on hand (the preferred method, see Warnings below) you can hold the door open with a coin.

Step 1: Getting the Supplies

Come on, if you don't have a quarter you are seriously poor (Euros work too.)

Step 2: Getting It In

1. Open the door
2. Hold the edge of the coin against the door jamb near the top hinge.
3. Shove the coin in

Step 3: Letting the Door Do the Rest

Slowly let the door close so one edge of the coin is touching the door jamb and the other is pressed against the door. The pressure of the door will keep the coin from falling. The coin will brace the door open.

Step 4: When You Are Finnished

Remove the coin and allow the door to close as soon as you're finished.

Step 5: Tips and Warnings

- Don't use nickles or any smaller coins, becasue the coin might get stuck
- Don't use giant heavy doars, the coin might get stuck and you can't get it out
- MAKE SURE THAT THE DOOR CLOSES BY ITS SELF, if the door just stays open then why use this instructable?