Answer:
I widen my jaws when you poke two fingers in me. I especially like to devour papers
I am an object which is used in baseball during the day I can't be seen at all
I wear a red robe, with staff in hand and a stone in my throat. What am I?
In my yard there's a bed with no pillows a trunk with no clothes a branch with no leaves. What am I looking at?
I am all around yet to me you are half blind. Sunlight makes me invisible and difficult to find.
No matter how little or how much you use me, you change me every month.