You Can Make A Spare Key From A Tin Can
You don't necessarily need to run to your nearest locksmith to get a spare key. Though it's your best option for a sturdy key, there's another way to create one in a pinch. You'll need the original key, a lighter, tape, and the lid of a tin can. Be super careful and watch how to make the spare in the video below.
How To Make An Emergency Spare Key
How To Make A Swiss Army Key Ring
For all of your many spare keys.
How To Pick A Lock
Do not use these powers for evil.