Boing! was cast in a bottle washed up on Dead Horse Bay, an 1800's garbage dump in Brooklyn.  Over time, the potting resin I used to make it epaded and Boing! molted the bottle like a snake shedding its skin.  Now the clock is a perfect resin mold of the inside of the bottle.
Time is told by four LED displays, of differing sizes and colors.  Set the time by turning the bottle cap.