Fellas, you're going to want this bell. And what better way to get that bell than with an automatic robot that uses simple components to create a unique musical experience. The system, built at Adafruit, includes a simple Arduino controller, a potentiometer to control the speed of the cow hammer, and some audio systems to read some BÖC and the immortal words of The Bruce Dickinson: "More cowbell."
It even includes a controller to activate a fog machine for a little rock and roll.
You can download the system code here and there is a complete build guide here. In the end it's one of the most stupid DIY projects I've seen in a while, but, as you'll remember, the only prescription for some fevers is obviously more than Bell.