Answer:
It can be used onstage or to express admiration. What is it?
The little pink nub that helps rectify mistakes.
I'm the source of all emotion, but I'm caged in a white prison.
What type of drink is usually added to cereal in the morning?
What can you lose that will cause other people to lose theirs too?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.