Tree branches, pine cones, ornaments and candles.
You can do so much with these four things.
You can spray paint the tree branches and pine cones. Get ornaments that are the colors of your wedding. They can hang from the branches and be placed around the tables. You can also get glass vases and put the ornaments in those. The possibilities are endless. The best part is the tree branches and pine cones can be free (just go to your backyard or local park). Buy the ornaments after Christmas so you can get them at a discount price.
Image via thenateshow.com