Answer:
*forward* *backwards*is what I do all day. I come in all different shapes and sizes. I can be scary and I can calm you down.
I can speak with my hard metal tongue. But I cannot breathe for I have no lung
I am a seed with three letters in my name. Take away the last two and I still sound the same.
What two keys cannot open any door?
I have a little house in which I live all alone. My house has no doors or windows and if I want to go out I must break through the wall.
I fly to any foreign parts assisted by my spreading wings. My body holds an hundred hearts Nay I will tell you stranger things when I am not in haste I ride and then I mend my pace anon.