What am I? Poems

Can you guess what they are???

What am I?
I write down your notes and your deep secrets
but I won't tell,
just make sure to use your neatness.
What am I?
By Evelyn

What am I?
My engine makes me go fast.
I am mostly carried on trailers.
I can tow you and you can have a blast.
When I am zooming, I zoom past sailers.
What am I?
By Paxon

What am I?
I spin and spring and run and fall,
I have tried it all.
What am I?
By Josh

What am I?
I am small.
I bounce.
I am round.
I'm about an ounce.
What am I?
By Sean