Answer:
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.
Different lights do make me strange, thus into different sizes I will change
What turns everything around but does not move?
What has four wings but cannot fly and uses the wind but does not know why?
I hide but my head is outside.
What did the piece of wood say when he saw the screwdriver and screws approaching?