Answer:
I am what brings things together. Without me everything you see would be a total mass or debris everywhere. What am I?
I'm tall I'm round and hollow Seems to get chewed a bit But you'll rarely see me unless the other end is lit.
I get dirty when wiping things clean. What am I?
I go up, let out a load and then go back down. What am I?
I am gentle enough to soothe your skin, light enough to fly in the sky, strong enough to crack rocks. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.