Check out this fun gadget, the USB LED Message Badge.
This fun gadget can display scrolling messages as well as animated messages of up to 250 characters long.
It can store up to 6 messages at once, and display them at a resolution of 12 x 48.
You can also ad BMP files to the USB LED Message Badge, and it supports English, Chinese, Japanese and Korean.
The USB LED Message Badge measures 101 x 33 x 6MM and weighs just 26g, and comes in a choice of blue and red.
It is available to buy online for $42 for the red version and $54 for the blue version from Brando.