Answer:
Lighter than what I am made of. More of me is hidden than seen. What am I?
I go inside boots and outside shoes. What am I?
I run up and down the stairs without moving. What am I?
I run around the streets all day. Under the bed or by the door I sit at night, never alone. My tongue hangs out, waiting to be fed during the day. What am I?
I am in the past, never in the future. I don't exist, but have existed. I saw what you saw, and this is what I will ever see. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.