Use a method for generating your passwords and save the means to generate it to a place you can get to from anywhere and you'll never go wrong.
NOTE these are examples of methods that I just pulled out of the air in 2 minutes, come up with your own variations/methods
Method 1.
Take one photo
Save it as the username you will use, eg psycho-panties.jpg.
Save it to a web site you can access from anywhere, eg your photo albums on KB
Pass it through a cryptographic hash function of some sort (sha1sum, sha256sum, sha512sum, sha224sum, sha384sum ....)
Use the first 5 digits of the hash, a symbol, the initials of the chick in the photo and the year she was born
8edbe=NW1981
Method 2.
Pick a pornstar
Edit the photo and embed the username on her right boob so that you can only read it if you zoom right in
Save the image to a place you can access it from anywhere, eg your photo albums on KB
Use her details as a password (according to Wikipedia Tera Patrick was born Linda Ann Hopkins)
LAH_36-24-38
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