Adafruit Industries Adafruit Industries NeoPixel Stick - 8 x WS2812 5050 RGB LED with Integrated Drivers
Make your own little LED strip arrangement with this stick of NeoPixel LEDs. We crammed 8 of the tiny 5050 (5mm x 5mm) smart RGB LEDs onto a PCB with mounting holes and a chain-able design. Use only one micro-controller pin to control as many as you can chain together! Each LED is addressable as the driver chip is inside the LED. Each one has ~18mA constant current drive so the color will be very consistent even if the voltage varies, and no external choke resistors are required making the design slim. Power the whole thing with 5VDC (4-7V works) and you're ready to rock.
Adafruit Industries NeoPixel Stick - 8 x WS2812 5050 RGB LED with Integrated Drivers