Love the simplicity of this idea, www.passwordcard.org.
If you struggle to come up with secure passwords, and struggle even more to recall them then this site may have the answer. Personally I use the superb 1Password app for Mac/iPhone/iPad but this is a great second best.
The site produces a unique, wallet sized card that contains a random selection of symbols, colours and letters/numbers.
All you need do is remember a symbol and colour. You can then read off a password and recall it easily. If you lose the card it is of zero use to anyone else and it can even be configured with a line of numbers specifically for PIN’s etc.
Simple and effective. And the sample used in the image above is a random example, not one I’m using!