Method #5: Use a spatula.
Insert the lever, and wedge the door open so you can push the spatula in and lift the lock.
Method #6: Use an inflatable wedge.
This method has the same principle as the screwdriver method, but it uses air to open the door instead of a metal object. With this tool, you can open the car in a minute. The plus side of this method compared to the screwdriver? No paint damage. The bad side? This tool can be quite pricey.