I have often wanted to use the end of my grand piano (when it isn't open) as a table; in fact, so have many house guests. Unfortunately, a grand piano is an expensive instrument and water stains or crumbs are not exactly encouraged. The piano table by Georg Bohle solves all these problems.
The piano table is a dining table or work space with a built-in electric keyboard made of oak wood. The keys are hidden out of sight when the table is in use and the flap can be raised when one wants to tinkle the ivories. Music and functionality together doesn't come cheap though--the piano table retails for $6000.