kimu-ryo's “True Random Number Generator Using a Disc Tray v1” uses the opening and closing motion of a DVD drive tray to physically roll a die. Because the result comes from an actual physical event, it serves as a source of randomness rather than a software pseudo-random sequence.

The ProtoPedia page highlights the simplicity of controlling the tray, and a v2 is being developed to return the die automatically after each roll. A computer component has effectively been reassigned to the ancient computational technique of throwing dice.