Answer:
We are five little objects of an everyday sort, You will find us all in a tennis court.
Only two backbones and thousands of ribs.
What hangs others yet can unintentionally hang itself?
Autumn leaves and bad bowlers wreak havoc on this
Different lights do make me strange, thus into different sizes I will change
What did the piece of wood say when he saw the screwdriver and screws approaching?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?