I seen some with large 3 to 4" dia candle sticks and dried floral arrangements...it makes a bit of a "shadow box"

Hi Amy, if you do a search for "fireplace" or "mantel" here on Hometalk, you will see lots of decorating ideas. Also, post a picture if you have one, we can give you some more suggestions based on that.

Pillar candles with LED lights, driftwood, a sculptural piece out of iron, a leaning piece of artwork, lots of possibilities. Think of things that represent your family's interests.