What are some other elements I can work in to my centerpieces so they look fuller?

We are using 8' banquet tables. The tableclothes are going to be brown and white gingham on 1 row of tables, and brown fabric on the next row, etc. We have a runner that is kind of a gr netting material. It's a khaki color. Then we're using hurricanes with pillar candles for the centerpieces, and then a couple of candles with cinnamon sticks hot glued to the outside of them for the scent and decor. They will all be spaced out. What else could we use on the tables to make it look fuller, so not thrown together? We have a country-outdoors theme.