Answer:
I contain five little items of an everyday sort. You can find all five in a tennis court.
Can not be bought, Can not be sold, Even if it's made of gold. What is it?
What can you lose that will cause other people to lose theirs too?
I donβt forget!
The Titanic is still here.
As round as an apple. As deep as a cup. All the king's horses can't pull it up.