Looking for a great visual to illustrate the brevity of life? The average life span for an individual is about 70 years. Multiply this number by 365 and you get 25,550, the average number of days in a lifetime.
Buy a clear container and fill it with 25,550 gum balls. Every morning before leaving the house, grab a gum ball. Each day, as the jar slowly empties the image is supposed to offer a tangible perspective on our fleeting lives.
On second thought, I don't think I'd have the impulse control for this to even be effective. My life span would go up in one huge bubble some where around day 6 or so.