If you're a Poker-playing Arduino enthusiast then the following project by Justin Trzeciak will be of interest. He's modified a typical card table by adding a networked Arduino that can control RGB LEDs mounted in front of each player's position. The illuminations are used to indicate the status of each player, or just be controlled for a visual effect.
The system is controlled via a web page which is hosted on a local server that's connected to the Arduino, and allows for simple control from a smartphone or other web-connected device on the local network.
Even if you're not interested in card games, this project offers a neat framework for controlling connected Arduino-based projects. To get started, more information and links to the code - visit Justin's table website. And for more, we're on facebook, twitter and Google+, so follow us for news and product updates as well.
If you're looking to make your own colourful LED-based project, consider our Freetronics RGBLED: full colour module. It includes a bright RGB LED on the top of the board and a WS2801 constant-current, addressable, multi-channel LED driver on the back. This smart module can be daisy-chained, so you can connect a number of these together in a string and drive each of the module colours individually from your microcontroller. For more information and to order, visit the product page.