The elevator in my work building has two things that people lean against other than the walls. The first is the Emergency call button which is on a separate wall from the other buttons so people tend to forget it’s there. I always wonder about the guy on the other end and how many false calls he gets in a day. The second thing is the mirror, and periodically you can tell someone had greasy hair because they leave a definite mark. It’s like in Coming to America with the entire family that wears the Soul Glow hair oil and leaves the stain on the sofa they were sitting on. Not quite as horrifying, but still kind of amusing in that gross sort of way.