We've shown you how to crack a master combination padlock, but what about the padlocks with keys? Apparently all you need to break one of those open is a paperclip.
The video above, demonstrating the method on one type of lock, comes from Instructables user theRIAA. The idea is to make a tension wrench out of one half of the paper clip and use the other half to jiggle the lock open. Of course this is much more easily said than done, and if you haven't picked a lock before you should probably learn how before trying this more advanced method, but it is possible and a good way to do it when all you've got is a standard paperclip.
Of course, you don't want to go around picking locks and breaking in to other people's stuff, but if you lose your key or just want a better understanding of lock security this is not a bad skill to have.
For the full instructions and a couple of other demo videos, be sure to check out the full post over at Instructables.
Open a Padlock with One Paperclip, Nothing Else [Instructables]