What’s the one timesaving product you can't live without?

My Palm PDA is my biggest timesaving device. It has become my only address book, replacing the four I used to attempt to keep current. I have my grocery list on it, sorted by aisle. I use it to keep track of my workouts, to remember which movies I want to see, which books I want to read, and which wines I want to try.

This tip comes from Real Simple reader TAMARA HOLLARS, Sacramento, California.