Call for database requests

Things to keep in mind:

This should be a relatively simple database, with general/widespread usage/application. We just want to setup a table with a handful or two of columns - the closer to a hand the better.

This should be something with a use on your own computer. Which is to say, it should be something where the sole person entering data is yourself, or those using your computer. Obviously, since we've installed Apache/PHP/MySQL/PostgreSQL on a local computer, there won't be many people using it from the Internet.

My fallback is to create a database that tracks gas usage and mileage for a car. I've already setup such a database using OpenOffice, and have been using it for a number of months, so I'll have a good deal of data I can use.