Answer:
What I am filled, I can point the way. When I am empty. Nothing moves me. I have two skins. One without and one within.
Reaching stiffly for the sky, I bare my fingers when its cold. In warmth I wear an emerald glove and in between I dress in gold.
Round as an apple, deep as a cup, and all the kings' horses can't fill it up. What is it?
Large as a mountain, small as a pea, Endlessly swimming in a water-less sea.
Without this, eating food and Steven Spielberg's career would be very different.
What do angels sing in the shower?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?