Answer:
I have keys but no locks. I have space but no room. You can enter but canβt go outside. What am I?
They come out at night without being called. They are lost in the day without being stolen. What are they?
I'm many people's favorite place, even though many don't remember their stay. You'll love to come but hate to leave. If you get cold, use my sleeve. What am I?
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?
Weight in my belly trees on my back nails in my ribs feet I do lack.
What is lighter than what it is made of?