Want to Be An Element?

For those of you coming with me to DragonCon - want to be an element. A guy is trying to arrange to have all of the elements in the parade. Most of the well known ones are taken, but quite a few of the obscure ones are up for grab. I'm interested, but would like to have some others I know with me in the herd. All that is required is some way of marking yourself. I'm planning on using fabric paint on a shirt if I do (and would make yours if interested).