Answer:
What always comes into the house through the keyhole?
What has thousands of ribs and two backbones?
What can touch someone once and last them a lifetime?
What is part of you and all around you but if it entangles you, it will kill you?
Sometimes it's silver but also gold. Printed on paper it's a treasure to hold. What is it?
The sun bakes them, The hand breaks them, The foot treads on them, And the mouth tastes them. What are they?