It is quite likely this is the coolest desk in the world!

The Pipe Organ Desk has been in the works for more than 3 years. It is entirely made from solid wood down to the last screw. It features an octave of functional wooden organ pipes. Should you play the correct sequence of notes or tune, a secret compartment opens up.

When you push in a drawer on the desk the air is directed to one of the organ pipes at the front of the desk, sounding a note. Some of the air is also directed into a pneumatic logic board. The logic board within the desk actually keeps track of the notes played. When it picks up the correct tune it unlocks a very special secret compartment. The logic board, can be reprogrammed to pick up any tune, so at any time the song may be changed to a new tune. It is powered entirely by air, and it is made entirely from solid wood.

via Pipe Organ desk.