Sèvres Vase Clock

Check out the Sèvres Vase Clock by Georgios Maridakis at the Royal College of Art, where it will tap the vase (gently, we presume) at each hour. Depending on your preference, you can always adjust the tone to a level of your choice simply by varying the level of water within. Definitely not something you would want to have when there are kids running around.