I was at a certain wireless trade show last week in San Francisco where there was plenty of decent stuff, but these dudes in animated jackets from NYX were more impressive than the rest (except the Treo 650, of course). The display is quite flexible and is not raised from the surface of the fabric. To show scrolling text or a graphical animation, just plug in your a Palm Pilot loaded with the NYX software and enter whatever you want. From club kids to traffic cops, wearable displays will soon be fun, informative and sometimes annoying.
Click on this thumbnail to view a demo movie. I apologize for the music, it wasn't my choice.
NYX doesn't have a public web site yet, but they are reachable via email.