I’m not the world’s greatest PHP/CSS/MySQL coder, and I tend to forget stuff as I don’t do them all that often. I was shown a site with a few very nice cheat sheets for various things, including PHP, MySQL and CSS, Ruby On Rails, and a few others. They are nice enough to print out, and have quite a lot of useful little bits and bobs that will be useful for when I am next butchering some code about. I’ve printed them out on card in glorious technicolour.
Shame I don’t have a laminator.