Answer:
We are little airy creatures all of different voice and features one of us in glass is set. One of us you'll find in jet. Another you may see in tin. And the fourth a box within. If the fifth you should pursue it can never fly from you.
I am heavy forward but backward I'm not.
What room do ghosts avoid?
I am an instrument capable of making numerous sounds but cannot be touched or seen. What am I?
I start new then become old. Start clean but become dirty. I usually start big then become little. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.