Answer:
You can spin, wheel and twist, but this thing can turn without moving. What is it?
Just head and foot yet never tires of dancing.
What is made of wood but can't be sawed?
As soft as silk, as white as milk, as bitter as gall, a thick green wall, and a green coat covers me all.
I am free for the taking. Through all of your life, though given but once at birth. I am less than nothing in weight, but will fell the strongest of you if held.
I have two eyes in the front and a lot of eyes on my tail