Answer:
I look like a tiny trombone
I am a protector. I sit on a bridge. One person can see right through me, while others wonder what I hide. What am I?
Iron roof, glass walls, I burn and burn but never fall. What am I?
I'm simple for a few people, but hard for them to hear. I live inside of secrets and bring people's worst fears. What am I?
By Moon or by Sun I shall be found. Yet I am undone if there's no light around.
I flow from the Homerβs mouth when he sees doughnuts.