Get a picture of something questionable in taste or blatantly sexual. You know, something you wouldn't want to be caught staring at.

Tape the picture to the inside of an elevator door using a very strong clear tape. Make sure the darn thing is really hard to remove. Add the doors always opening and closing and you have a difficult to remove item that people will see only when the doors close.

Ride the elevator for a while and enjoy the fruits of your labor.

---submitted by Jack