Why on earth would I need to do this you ask?
long story short, I was brand new in my office, they hadn't given me and office key yet, an I was the last one in the office option 1 was wait 4 hours for a coworker to return, or find a way to lock the door.
jump a few years into the future, and I just recently found myself in the same circumstance, last one in the office with my wife's car (and keys) so I had no office key. I was on my way in less than 5 minutes.
I'm sure if you think about it you can find a few more not so good uses, but you're on your own there!
Step 1: Materials
The tape can be just about any kind. Only a little strength is needed.
Clear packing tape seems to be a good choice.
Step 2: Setup
1. Cut a length of tape about 8-16".
2. Cut a notch in one end.
3. Fold the tape over on to it's self.
Step 3: double check
You don't have a key to the door and your about to lock yourself out, make sure you have your car keys, iphone, etc. You don't want to explain why your trying to break into your office, especially if your a new employee.
Step 4: locking the door
Open the door
stick the tape to the lever
fold it around the door.
close the door
pull the tape