Many different riddles

1. What goes up and down stairs without moving?
2. What kind of room has no windows or doors?
3. It has no top or bottom but it can hold flesh, bones, and blood all at the same time. What is this object?
4. What has to be broken before it can be used?
5. The more there is, the less you see.

Answers:

1. Carpet
2. A mushroom
3. A ring
4. An egg
5. Footsteps