How to Open a Car Door With a Tennis Ball
- 1). Find a tennis ball at home, or purchase one at a local sporting-goods store. Cut a small hole about the same size as the keyhole on your car door into the side of the tennis ball; use a small kitchen knife or a nail to puncture a hole. You can also use a lighter to burn a hole.
- 2). Press the tennis ball hole against the key hole, squeezing the ball until the air pressure causes the door to unlock.
- 3). If the door does not unlock right away, continue applying pressure.
