Egg timer/alarm clock widget
Say you're working on your Mac and you've got something on the stove or oven, or have clothes in the laundry, or you have to leave the house in ten minutes, or anything where you just want to be buzzed in a short time period. Cell phones do this easily via their alarm clock, why can't a Mac?
No iCal please - I don't want to create an event (much less have to wait to open the app) just to be reminded about something in a few minutes. No stand-alone alarm clock apps please, for the same reason. Just a widget that acts as an egg timer/alarm clock would be fantastic!
Macbook 1.83GHz Core 2 Duo, Mac OS X (10.4.8)