I use a unique generated password for every instance. Then I store these passwords in yaml files on an encrypted partition on my harddrive that is unlocked by

I use a unique generated password for every instance. Then I store these passwords in yaml files on an encrypted partition on my harddrive that is unlocked by a keyfile on a usb stick. I wrote a little script that searches these yaml files and automatically copies the password found for a given key (usually a site nickname, like "hn") to the clipboard, so I can just paste it in. This is both convenient and allows me to use a unique, strong password for every site and service I use.