tl;dr:
Use xkcdpass to generate more secure passwords, like “correcthorsebatterystaple”.
Note
Started as a Note but I passed my 15 minute rule — if I spend more than 15 minutes on it, it should be a post — so here we are.
It won’t satisfy your bank’s silly password requirements, but — as XKCD told us — using a random collection of words for your password provides more security than trying to Leet-speak some word with numbers and symbols.
You could pick a handful of words by flipping through the dictionary, but why not let the computer do it for you? That’s where xkcdpass comes in.
It’s probably available in your package repository.
$ pacman -Ss xkcdpass
It’s just Python, so you can use pip if you’re on macOS or Windows or some other platform that doesn’t have xkcdpass handy.
$ pip install xkcdpass
Regardless of how you install it, run it and grab the output — but let your password manager remember it for you.
$ xkcdpass tiara embezzle stack doorway scrambled imitate