Working in an office can sometimes be extremely boring, especially if you have annoying people around. Rest assured, you can get what they deserve using one of these nifty and undetectable devices.

Your could watch your potential targets rip their clothes off in despair, throw their computers off the window, or even play some football with the corporate computer systems. However, if you get detected, it will probably cost you your job.

The USB CapsLocker is a really undetectable device that plugs into any spare USB port, but you might want to use one that's not quite in plain view. A truly sick mind would even go further and use an internal USB expansion port, to hide the device inside the computer case.

As soon as you plug in the insane device, it would randomly send CapsLock commands as if it were an USB-attached keyboard. You can set the torture intervals between 30 seconds and 8 minutes, to be sure that you drive your target mad.

At first, the subjects will believe that they have accidentally hit the Caps Lock key, especially because when the signal is sent, the Caps Lock LED is automatically toggled. After 40 times, panic is sure to strike. The device is relatively easy to produce, using cheap electronic parts, so, when it finally gets detected and smashed, there's no big loss.

The next device on the pranksters' portfolio is the Phantom Keystroker, a slightly larger device, but proportionally as powerful. The gadget also connects via an USB port, then perform random movements with the mouse's pointer, type out garbage text, or even both at the same time.

The subject's computer will present all the symptoms of a busted computer, ready to meet the disposal room. Working on the "infected" computer is out of discussion, or at least if you want to preserve your mental sanity.