I was a kid in the late 60's - early 70's. My favorite memory of a decoration was a cardboard fireplace. Dad was in the army, and few base houses had fireplaces. I was concerned that Santa couldn't get in the house without a fireplace. Mom & dad found a cardboard fireplace that had a colorwheel behind the painted flames.
They assured me that Santa could use it, even though there was no chimney...and it always worked!
I just found a video of THE SAME FIREPLACE!!!
Oh, my. This takes me back.