Several phone numbers I want to know in case I don't have my phone and want to call one or more of them.
Names of people I just met.
Recipes I make often enough and don't want to bother getting out the binder/book/tablet for.
Keyboard shortcuts, like for copy and paste and also for boot options on Dell, HP, etc.
My social security number and those of my immediate family members.
Birthdays.
Things like this.