Answer:
Long and thin, red within, with a nail at the end.
I am the first you ever saw, what greets you every morning and what goes out in the end.
How can the letters OWONDER be rearranged to make one word?
What is it that you ought to keep after you have given it to someone else?
What freezes after it is heated up?
I am a room that has a roof but no walls. What am I?