Buddhist Bead Clock
This is a wonderful clock concept — a bead drops every 5 minutes. I imagine that the beads are a Buddhist mala and it is used for meditation…
(Via Long Views.)

More info from the designer of the clock. Also see this page regarding digital prayer wheels.

I imagine it would be quite difficult to actually tell time with that clock, although it is quite beautiful. If it is just a piece of time-art you are after, maybe a cool hourglass is the better way to tell that time is passing – no electricity needed, simply turn over with your hand.