We've seen similar solutions in the past such as the "Panic Button", but this is actually a more discrete option...
A small red button on the top and front of this ordinary looking-mouse could save you from getting a right ticking off if you're using your PC for activities outside your usual duties.
Once the "Phantom button" is clicked, one of two things will happen, depending on how you have it set up.
The button can be programmed either to minimise all programs, or you can have it bring a particular program to the front of your screen.
$24, from Thanko in Japan.