Blow your nose and offer to show the contents of your kleenex to other passengers.
stare,grinning, at another passenger for a while, and then announce: "Ive got new socks on!"
bring a chair along
Stand in the far corner standing still and saying nothing glanceing at the most innocent passengers
Draw a little square on the floor with chalk and infrom the other passerngers that this is your "personal space"
Tell me what you would do randomly in an elevator to totaly tick people off, get your self killed, or just be totaly bizzar?