Zara has a great collection of silk skirts in stores right now. I bought one in a brick, charcoal, navy and white plaid (not at all as ugly as it sounds) from their store for $39 last weekend. It's got a great fullness, a perfect below the knee hem and, best of all, trouser style pockets!
I've recently realized that I will buy pretty much any dress or skirt that comes with pockets. You can keep your hands warm and carry stuff around without wearing pants...how novel! My ideal outfit for the rest of the winter would be a skirt with pockets, a turtleneck, thick tights and a pair of cute ballet flats.