Answer:
In the forest, this blends in just right, but every December it is covered with lights. What is it?
I am black when I am clean and white when I am dirty?
I have one eye. See near and far. I hold the moments you treasure and the things that make you weep.
It floats over the land, It cuts the tallest mountain, Its voice is like a fountain, Its body like a snake, Will flow into a lake.
Of these things - I have two. One for me - and one for you. And when you ask about the price, I simply smile and nod twice.
What did the piece of wood say when he saw the screwdriver and screws approaching?