A time for families and friends to spend time together
Christmas lights make people think of them wrapped around a tree, and this gives us a feeling of Christmas. Also, when they see the different colored lights, this will attract them into the store.
Stockings and Fireplace
When people see stockings on a fireplace, then this will catch their eye. Then when they see this, they will get the idea of Christmas.
Christmas trees during Christmas time, will certainly catch a viewer's eye to make them think about Christmas. When you see a Christmas tree then you think about presents and Christmas lights.