Stealth Switch

With just a tap of your foot the Stealth Switch will instantly hide whatever computer windows you configure it to. You’ll never get caught doing something or looking at something that you aren’t supposed to at work again. The Stealth Switch also can mute the sound, hide the taskbar and/or hide desktop icons. Can be plugged into a USB port or between your computer and keyboard.

Available for $24.99 from ThinkGeek.