I have the equivalent of about 20 non-working fat xbox 360's in my garage. I'm basically thinking of parting them all out. You name a part, and I probably have at least 10 of them. Fans, fan shrouds, working and non-working dvd drives, faceplates, screws, shells, etc. If there is any specific part of an xbox you're looking to get for cheap, ask me about it. I also have quite a few fat ps3 parts.
I can make a more exhaustive list of what I have, but that will take time and I don't know how interested you people are in buying these things.
Hit me up with a request and I'll send you a picture and we can work out a deal.