nice!
I was going to post the exact thing. I use a "base" that remains the same and an "extension" that changes each time I'm required to select a new password. Unfortunately since I can't remember all the little details of which password goes with which system, I have to have a paper with all my "extensions" written on it at my desk. Heaven help us if someone figures out my "base". Or, they could just let me make up a new password like CorrectBatteryStapleHorse that would be memorable and virtually unbreakable.