Here is another interpretation of the extension cord. The Tapbox extension cord, by the Japanese design company ideaco, provides a colorful cube to hide the bulbous plug ends of up to 4 different devices.

This solution still doesn't hide the mess of wires that tends to accumulate beneath our desks but it may be able to provide some sense of order and organization for those wires....as long as you live in Japan or know of someone that can get it for you.

-via Ubergizmo