Bit too spendy, but lovely.
A turn of the elegantly shaped key magically produces one of Mozart's melodies from inside the solid wooden ball. The 18-note chime plays whether the ball is rolling or standing still. Manufactured in a village on the edge of the Black Forest, the hidden chime mechanism is mounted in premium quality wood that has been fashioned into a perfect sphere.
(via Fabulist. Thanks, Olga!)