Aspiral Clocks shows time, hypnotizes patient people

Here’s a neat way to tell time. Rather than using hands or digits, the Aspiral Clock consists of a slowly-rotating spiral track with a ball inside, and the time is indicated by the position of the ball. Neat!

This would also make a pretty kicking pet feeder- load up each ‘ring’ of the spiral with an appropriate amount of food, and watch it slowly fall out into their feeding dish.

[thanks, Stuart!]