Not the OP, but I have the same question
Here is what the general consensus for "necessary" accessories:
1) External Hard Drive Western Digital Passport 500GB USB
2) Wireless Mouse I'll be finding a used/refurbished Apple Magic Mouse for ~$40
3) Case/Sleeve
4) Microsoft Office
5) Headphones S4i In-Ear Headphones
6) Stand
7) Flash Drive 4GB Samsung Drive
8) External Monitor Dell 23" Widescreen
9) Keyboard
10) Clear/Plastic Hardcase
I have a few of these items already, so that's good to hear. I plan to find a copy of MS office online or buy it for $50 at my college computer store. I like the Waterfield suede jacket sleeve, I definitely want a sleeve, less is more to me, but that one doesn't have a zipper on the end. I'll find a magic mouse on ebay or craigslist and save $30. Do I really need a stand? What is the benefit, for $50, it seems as if I could do without. I don't really know about the external keyboard either, I plan to just use my macbook's keyboard. I'm also worried that if I get a plastic hard-case, I'll have trouble fitting it into a sleeve.