[Sohcahtoa82]

> My approach to that is to follow xkcd advice with an emergency password which looks less like a random string but more like a real world phrase.

Yeah, for my master password, I use a slightly misheard line from an episode of a 90's TV show. Googling my misheard version in quotes only gets 6 hits, and it's 30 characters long, so very unlikely to get cracked even without replacing letters with symbols or adding a suffix.