Answer:
We are five little objects of an everyday sort. You will find us all in a tennis court.
What has a spot and is very bright, is sometimes, red, white, blue, yellow or green and is often blinding.
They can be harbored, but few hold water. You can nurse them, but only by holding them against someone else. You can carry them, but not with your arms. You can bury them, but not in the earth.
This is in a realm of true and in a realm false, but you experience me as you turn and toss.
It flies when it's on and floats coming off.
What covers its face with its hands, speaks no language, yet most known what it's saying?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?