Pumpkins is one of the most famous Thanksgiving decorations used for Thanksgiving and during the fall season. You can create a dramatic effect with using pumpkins on your fireplace mantel or you can even use them to help with creating a romantic effect. Pumpkins can be used for old-fashioned Thanksgiving fireplace mantels or even used during a modern or contemporary type of look. Fruits and flowers often times are used with helping the display look even more amazing. Make sure the pumpkins aren’t flammable pumpkins and safe to use on top of your fireplace. Here are 20 pumpkin fireplace mantel decoration ideas.