I'm so into hot cocoa bars this year because they're warm, tasty, inexpensive, and best of all... unexpected. Stealing from the traditional ice cream bar idea, a hot cocoa bar is where you set out cups of hot cocoa (or a carafe) and a selection of toppings and let your guests go to town.
For kids, I recommend putting out a variety of candy toppings (flavored marshmallows, crushed peppermint, M&Ms, etc.), and for adults, you can kick it up a notch by putting out some delicious liqueurs. Take a look at some of these fantastic ideas we've seen.