For my less secure passwords, I use a tabla recta: I keep a grid of random base64 characters on a laminated card in my wallet. I use a secret algorithm to deri

For my less secure passwords, I use a tabla recta: I keep a grid of random base64 characters on a laminated card in my wallet. I use a secret algorithm to derive a site's password from that grid. This gets me a unique password for each site, but I don't have to remember it. The code for generating the table is in this gist: https://gist.github.com/dunhamsteve/3259075 (You might want to tweak the font - 1 and l are very hard to distinguish in Courier.)