Answer:
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?
I have a hundred legs but cannot stand. I have a long neck but no head. I cannot see and I help keep your house neat and tidy.
Deep, deep, do they go. Spreading out as they go. Never needing any air. They are sometimes as fine as hair.
The Titanic is still here. What am I?
What is the edge of earth and bread?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.