A group of people, all with a single very large (18" high or more) letter sewn into their jackets, remove the jackets and hold them up in line, spelling R-O-N--P-A-U-L or whatever message they want. If you had enough people, you could spell out a message, one or two words at a time, like a traffic sign: Romney equals Obama, Support Ron Paul, Dogs against Romney, or whatever. Would be best if the sign were in front of the cameras, of course.