This is the place where I add links to cool projects I come across for later reference.

LED General, LED Cube, RGB LEDs

• Charliecube (4x4x4 RGB LED Cube)
• MADE(by)FRUTOS has designed and programmed a beautiful RGB lamp.
• RGB Led Strip Controlled by an Arduino. (Jerome Bernard)
• Make LED Flowers

RFID

• How to get started with the Mifare MF522-AN and Arduino. (Grant Gibson)

Robotics

• Brush bots

General Arduino

• PAPERduino
  

Arduino <> Android

• Controlling Arduino with Android using Processing
• RC Robot

ATtiny85

• Programming shield for ATtiny micro processors
• Color sensor using ATtiny
• POV using an ATtiny85
• Moodlight (ATtiny85)
• BlinkM clone
• AnnoyATtiny85