mettapera build a small bar inside a table and in order to spice it up added a seven-band audio spectrum equalizer with both LCD screen and RGB leds and a smoke machine. All this is controlled by an Arduino and the bar is supported by a gas spring to help the lifting.
A neat small corner transforms in a sec to a mood changing place and the "Zorba the Greek" soundtrack helps the most. :)
Arduino code and more details can be found here.