Answer:
What can you blow up and keep intact?
What is flat, usually square, and made from trees but isn't wood?
When one does not know what it is, then it is something; but when one knows what it is, then it is nothing.
It breathes fire in fairy-tales
What can an elephant and a shrimp both be?
What never gets any wetter no matter how hard it rains?
Kids
Animal
Difficult
Easy
Food
Funny
Logic
What am I?