DEF CON 23 - Ryan Castellucci - Cracking CryptoCurrency Brainwallets

https://www.youtube.com/watch?v=foil0hzl4Pg

is an epic reminder why you should not use single hashed brainwallets.

If you must go with a brain wallet than even small passwords salted look pretty strong if using

https://keybase.io/warp

Caveat: That comes from a cryptography layman!