What Can You Store in a MySQL Database?

I used rely on flat text files and grep or Perl to store and retrieve my data. Increasingly I try and use MySQL for everything.

I use MySQL for all my logins,passwords,urls etc

I use MySQL as a code snippet stores, so every time I develop a useful reusable bit of Perl,PHP,HTML and even MySQL it gets stored in MySQL

Family History well that's obvious

They are all tables in one database so one quick datadump backs up all my information.