Each drawer represents some category of all your many accounts (e.g. the emails is the top-left drawer, the ones with your credit card info is the bottom right drawer--you know, where you store your favorite purple dildo, etc.).
Within each drawer, you're going place a unique password. For each password of your emails (suppose: 10), you'll need to slightly change the unique password for each account. So, each one is different, but if you have a mechanism in mind for changing it around, then it's simple to figure out.
- For examples, you could even tie-in two characters from the account name which represent the password, or you can recall that the account name reminds you of some time you've had in Canada with the Mounties. Another way is to reinvent stories behind each account, and tie-in the relevance of each story to a unique password (it's like memorizing Chinese characters, duh!). That helps with memorization.
I don't use the above. I use one password for everything: asdf