For those that regularly have to deal with feeding quarters into parking meters, this device could be a life ticket saver. It's a small keychain that includes a timer and holds a stack of quarters. Set the timer when you feed the meter and it will beep five minutes prior to it expiring. But there is a definite downside to a device like this...

"I have to go feed the meter," is one of the ultimate excuses to get out of a long-winded conversation. If you're relying on an automatic timer, then you could get into some hot water. It's available for $10 from one of those generic gift stores. [Spoon Sisters via Geeksugar]