Answer:
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.
I am a word. I become longer when the third letter is removed.
What has banks but no money a bed but no sleep waves but no ocean?
What has words but never speaks?
People need me yet they give me away every day.
What made Cyclops quit teaching?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic