What materials can I use and how, to make my own design cake pan?
Johnny, you're an idiot, you have no idea what you're talking about.
You can get thin sheet aluminum at most hardware or home supply storesYou will need to use tin snips (like scissors for metal) or a hack saw to cut the desired shapes and sizes Depending on the design, you might be able to bend the aluminum into shapeIf you need to attach separate pieces together, you will have to solder themAlternatively, you might be able to find a metal fabricator shop that will make them up for you for a price.
Go with Aluminum Mac book because the aluminum will transfer the heat out of your laptop therefore lengthening your life of your laptop
If what color it is is all you care about, then you don't need to worry, just buy what ever suits you! Me, I would much rather have a computer that I can do something with, like a PC and couldn't care less about what it looked like! That is so shallow!