Make an LED Gmail Notifier
Using an Arduino, you can program any device to turn on, illuminate, spin, fly, whatever you want when you receive an email. In this tutorial, the author used an LED Cube with an embedded RBG color cycle. If you don’t happen to have a glowing cube lying around, you can modify this to work with almost any output device you could think of, from a simple LED star, or a buzzer, to something far more clever like moving a servo.
