Answer:
Cold head and feet; round as a ball; always turning around myself.
you need thousands of me to create a digital image.
Whoever makes it tells it not. Whoever takes it knows it not. Whoever knows it wants it not
I am a kind of coat that can only be put on when wet. What am I?
I am drawn by everyone without pen or pencil
I am your mother's brother's only brother in law. Who am I?