Answer:
What is something yet nothing, but if you fill it up it will disappear?
What instrument can make any sound and be heard but not touched or seen?
I run cold and hot, I look blue but am red. What am I?
I have eighty-eight keys but cannot open a single door? What am I?
I start in little but I end in full, you'll find me in half and complete.
What did the piece of wood say when he saw the screwdriver and screws approaching?