Answer:
Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.
What has to be broken before it can be used?
Different lights do make me strange, thus into different sizes I will change.
We are five little objects of an everyday sort, You will find us all in a tennis court.
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
If lightning strikes an orchestra who is the one most likely to get hit?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?