Long live the Arduino !!
A couple of projects that I completed:
This is a 4 x 20 LED display that scrolls the time/date, weather information, e-mail status, and more. It is run by an Arduino Uno.
This Arduino Uno based display is an Adafruit NeoMatrix with added clear plastic rods for visual effect. It scrolls the time/date, temperature and the phase of the moon (shown), along with some entertaining patterns.
When time allows I will provide more information about these projects, including source code and wiring.