Hone your lock picking skill with a transparent padlock.

Have you ever gotten locked out of your car or house in the snow or rain? The amount of money you have to pay the locksmith to get you in is almost worse than being locked out. So why not be your own locksmith, and charge other people ridiculous amounts when they get locked out? If that does not work out you can always use your skills to pick locks. Just kidding.

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Under $25