I guard a secret stamped in wax, I dive where icy waters freeze. I keep the pressure from attacks, And fight for freedom on the seas. What am I?

I can be a tasty breakfast treat, Or a trick you can pull on the street.

Hear that wooden song, fingers dance where bars belong. A rainbow of tones rings out so clear, a child's delight to the old ear.

I connect many destinations, yet I am rarely where you intend to stay. Doors line my sides, leading to many rooms, though none belong to me.

I have yellow teeth but cannot bite, I wear a green coat tucked up tight. I stand in a field with a tassel hair, And come off the cob at a summer fair.