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1st ?
I broadcast your actions.
My emotions change constantly.
I can take you anywhere you want to go,
With just a click of a button.
I also have billions of stories
That I am dying to tell you.
At times you can hate me
Or I can be your only friend.

2nd simple

?
I illuminate your room.
I am the sun,
That brightens your life.
I am controlled by a switch.
My inventor was ingenious

3rd
I sit on your desk.
I was once full of lead.
But now I am not.
I save you ideas,
But if I break
You will need to sharpen me.
I am your weapon of choice,
And I have won many battles

remember 6th grade tell me what you think and what they are
also they are object poam (form of a riddle/poem