Answer:
The person who makes it has no need for it. The person who purchases it does not use it. The person who does use it does not know he or she is. What is it?
Lives without a body, hears without ears, speaks without a mouth, to which the air alone gives birth. What is it?
Where humans breath liquid?
A type of hammer that brings a room to order.
You can tumble in it, roll in it, burn it, animal eat it. Used to cover floors, still used beyond stall doors. Freshens whatever it is placed on. Absorbs whatever is poured into it.
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.