One of my favorite holiday traditions is the "Hot Toddy" - more specifically the Tom & Jerry (or T&J as Will and I affectionately call them). This is a long-lived tradition that we inherited from my in-laws, and I don't know how I survived the long winter months without one.
Put the following in a mug:
1 large (overflowing) shot of Brandy
1 heaping spoonful of T&J Batter
Fill mug with hot water and mix until frothy
Top w/ nutmeg (freshly grated is the best)
We can buy Tom & Jerry batter at the local grocery or liquor store. My in-laws have a great homemade recipe as well (but it doesn't last). I highly recommend that you try one this holiday season.