Keeping warm/being happy in the dorms- essential items?

<p>Now that all the winter clothes are on sale, what should I buy in order to keep warm in Chicago? I just bought a long down coat and I already have a pair of sorel snow boots. What else do I need to get?</p>

<p>Also, any suggestions of things to bring that I might not have thought of? i.e. what would you say is the most useful thing you brought with you that people might not have told you to bring?</p>