Check out the USB LED Mini Board that allows you to say your piece in a digital manner. Features and specifications include :-

• 48 x 12 pixels
• Stores up to 6 messages (250 characters long per message)
• Stores bitmap images
• 11 twinkled animations embedded and a brightness font
• Running sequence control
• Variable speed control
• Scroll, Twinkle, Snow and Hold actions
• Brightness control (25%, 50%, 75%, 100%)

The USB LED Mini Board supports English, Chinese, Japanese and Korean languages, and will work only with the Windows platform so Mac users are out of the picture, unfortunately. This nifty desktop device can be yours for $45.