Programmable Scrolling LED Sign Geek Hat
"This programmable scrolling sign hat is like having a piece of the future on your head. Be one of the first people to sport this new LED hat. You can put up to 118 characters on it. Write whatever you want and let it scroll across the screen! Your name, your number, your favorite team. The message is up to you!"
Nice. Though we wouldn't say as far as "a piece of future", but hey it's cool to wear for a geek party. Grab it for US$ 9.50 from here.