Maize and wheat create a simple Thanksgiving centerpiece that harkens back to the origins of the holiday. Place dry floral foam in a galvanized pail or bucket so that it sticks up over the rim an inch or two. Insert wheat stalks into the foam. They should fan out around the edges of the container. Top with multicolor ears of maize. For festive place settings, attach a name card to an extra cob set on each plate.