Answer:
I am Invisible Man's drink at snack time
I am the kind of soda you must not drink.
I hatch without food
I am a cave full of bones and the house of a worm.
You write on me and secrets I can keep. In places never seen. I spin like a top. Though stiff as a board I'm often described like a mop.
In your fire you hear me scream! Creaking and whining yet I am dead before you lay me in your hearth.