I like the NOEL including the clock. It's the proximity of the mantel to the tree, though, that pulls off the impact. I did it with Red and Black and used a round chalkboard for the O and added a star chalkboard for accent with the year.
Simply pour 2 cups of CLUB SODA directly in the center of a fire ant mound. The whole colony will be dead within about two days. Each mound must be treated individually and a one liter bottle of club soda will kill 2 to 3 mounds.