Open a padlock with a clip, something you can find while you are traveling or in your office. You can made a tension bar and a rake pick out of the clips with no tools, you can MacGyver your way in.
I show you why you should not buy cheap locks.
Step 1: Make a Tension Bar
You can make a tension bar by stretching the paperclip and making a knot on the shorter blend.
Step 2: Make the Rake
You have to stretch the second clip and make 2 or 3 undulations in one side.
Step 3: Rake the Padlock or Lock
Then you have to make tension with tension bar on the bottom of the lock hole and then rake the lock pin side of the lock.