Answer:
What is yours but only used by others?
What always comes into the house through the keyhole?
What instrument can make any sound and be heard but not touched or seen?
If you happen to wake up at dawn, you'll probably find this covering the lawn.
Passed from father to son and shared between brothers, its importance is unquestioned though it is used more by others.
Cycle Cycle Cycle.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?