Homemade Sex Toys has posted a guide to converting a classic Atari 2600 joystick into, well, a joystick. From the HOWTO:
There's something about an Atari 2600 that makes you feel warm and tingly all over. If you want to bring those feelings to the ultimate climax, follow these instructions to make a vibrator out of your Atari controller.
We found a small, inexpensive and self-contained bullet vibrator that fit perfectly inside the case and whose switch happened to be very compatible with the button on the Atari 2600 controller. With a little wire, solder, and basic materials, you can build one of these units yourself and put even more joy in your joystick.
