I use passphrases for frequently used logins and randomly-generated passwords of varying lengths for everything else. I also use a hardware key and/or 2FA for everything that allows it.

I'm conversationally fluent in a few different languages (enough to order food, greet people and ask directions to the shitter, anyway) and I can swear in another half-dozen languages so I tend to mix'n'match my passphrases with different foreign words. Bonus points for accented characters. That's probably not gonna fool a dictionary-based attack but since I live in a (mostly) English-speaking country, it might make it interesting for the English-only speakers to try guessing.

At work, we're held to the outdated policy set by the IT department so it can be difficult to be creative. On top of that, they force a password change whenever someone sneezes so I see a lot of sticky notes on monitors and under keyboards.

Edit: spelling and grammar.