One of the easiest, least expensive ways you can decorate your house for Christmas, is with evergreen branches.  I wait until 1-2 weeks before Christmas so that the branches won’t get too dry, and then I go out and cut the ends off of some large evergreens we have on our property or in trails nearby.  I love the fresh smell and natural look of using real greenery.

Sometimes a few branches are all you need.
Branches tucked into our diningroom light.  I made the mittens from scraps of wool. 
My mantle; the floating candles look beautiful when lit at night!

Better Homes and Gardens
OK, I know there are no branches in this pic, but I couldn’t resist showing off the snowmen my girls and I made when they were young!