Mnemonic major system helps you remember other things if you memorise it:<p><a href="https://en.wikipedia.org/wiki/Mnemonic_major_system" rel="nofollow">https://en.wikipedia.org/wiki/Mnemonic_major_system</a>
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.<p>Things like this.