I speak without a mouth and hear without ears. I have no body, but I come alive with the wind. What am I?

What has a head, a tail, is brown, and has no legs?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

What has a neck but no head, two arms but no hands?

I am not alive, but I can grow. I don't have lungs, but I need air. What am I?

What has a heart that doesn't beat?

I am always hungry, I must always be fed. The finger I touch will soon turn red. What am I?