In his amusing 1998 Dilbert book The Joy of Work, Scott Adams suggests ways to increase your perceived value at work. Under the sub-heading "Be Mysterious and Eccentric", Adams suggests, among other things:
Leave ambiguous clues about your wild and dangerous lifestyle. Put motorcycle keys on your desk where people will see them...These and other steps, he writes, "will give you a reputation as a mysterious and dangerous player."
Let me tell you, it doesn't work.