Check out this neat 8-bit Annoying Person Remover project. It uses an old NES as the shell or enclosure of the project, and a whole bunch of Adafruit components. It basically senses when a person has entered your office, plays some cool Nintendo music, and starts a countdown timer. That person has just a few minutes to say what they need to say before the timer goes off.
The project above uses the Adafruit Music & Sound Add-on Pack for Arduino. It’s a Wave shield party pack! Just add an Arduino to create your own iPod-killer, audio art, sound-effects box!