Answer:
What can fill a room but takes up no space?
I am a mother from a family of eight. Spins around all day despite my weight. Had a ninth sibling before founding out it's fake.
I have memories, but none of my own. Whatever's on my inside is what is shown. If I'm ever different, it's because you changed me. I feel like a decoration, here for you to arrange me. What am I?
I can speak with my hard metal tongue. But I cannot breathe, for I have no lung. What am I?
I am the kind of ant that's good at math.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.