It really changes for me. At a point I bought oh so many cardigans in all sorts of colours, but that is a few years ago. But now I have them, and they are great basic elements in my wardrobe.
My latest obsession is probably tights and blazers and blazer-ish jackets. - At least that's what I'm generally drawn to ATM.
Though, I'm always on the lookout for nice dresses.