French artist Bertrand Planes created this Life Clock (click for bigger):
One rotation of this clock is equal to the average human lifespan. Bertrand Planes used an ordinary clock slowed down 61320 times to make each minute equal to a year.
It’s not a present I want to receive when I turn 60 next month!

one advantage: when it comes time to change the batteries, you just forget to do so!
You made my day!