Joystick LED Light
You'll need an Arduino Uno, one Joystick with a breakout board (I bought one from Adafruit), and nothing else since this uses the on-board LED.
Plug VCC into 5V, GND into GND on the analog side, Y into A0, X into A1, and Sel into A2.
When you tilt the analog stick to the right, it should light up the on board LED! (Provided that is PIN13.)