Answer:
What do you fill with empty hands?
A great mysterious place that the bold have been known to journey into.
What turns everything around but does not move?
What does man love more than life, fear more than death or mortal strife. What the poor have, the rich require, and what contented men desire. What the miser spends, and the spendthrift saves. And all men carry to their graves.
Flat as a leaf, round as a ring. Has two eyes, can't see a thing.
What did the piece of wood say when he saw the screwdriver and screws approaching?