First things first: don't forget to make a plan for drinks when planning your Thanksgiving menu. Maybe that plan is just to ask your guests to bring something, maybe it's to pour everyone some lemonade, or maybe it's to make a batch of seasonal cocktails.
Classic Manhattans aren't particular to Thanksgiving, but their rich but balanced flavor hits me as just right for starting the celebration right. Or, keep things ultra-seasonal with a Cranberry Margarita:
Or this Fresh Pear Sidecar:
For a less intense jump into the fun, try adding a nice bit of seasonal color and flavor to a glass of champagne, sparkling wine, or sparkling cider by dropping in a few pomegranate seeds (see other great ideas for using pomegranates). I've also been known to pour Classic Champagne Cocktails or Kir Royales to start the celebration in a sparkly, vibrant way. I have been known, of course, to make the kir royales using homemade Cranberry Liqueur instead of the traditional crème de cassis. You still have time to get a batch done!