Answer:
What is the thing that stays the same size, but the more it's used the more it decreases?
This is needed both for courage and hardcover books.
What an fill a room but takes up no space?
Take one out and scratch my head, I am now black but once was red.
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.
I can only be played on a windy day