Answer:
I have a little pool with two layers of wall around it. One white and soft and the other dark and hard. What am I?
When you need me, you must find me. When you find me, you no longer need me. What am I?
I'm a kind of cup that doesn't hold water, but makes a lot of noise repeatedly. What am I?
I look like a tiny trombone
I widen my jaws when you poke two fingers in me. I especially like to devour papers
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.