There are many that I considered for this article, but the alphabet one seems the most commonly applicable. What sucks is when site changes it's main title and/or URL. I made an app to process a url into a password but I stopped using it after a few sites started putting "m." in their mobile site. It makes a different password.
My current one is a little different, but of course I won't say anything else about it.
Well anything I come up with would also need to be something my wife could make sense of. I'd want her and my children to be able to access my things if/when something happens to me.