What Am I Riddles

Question: Every night I'm told what to do,
and each morning I do what I'm told.
But I still don't escape your scold.

What am I?

Question: I have memories, but none of my own,
whatever's on my inside is what is shown.
If I'm ever different it's because you changed me,
I feel like a decoration, here for you to arrange me.

What am I?

Question: When you do not know what I am, then I am something. But when you know what I am, then I am nothing. What am I?

Question: When you close it, you see mysterious and funny looking images. But if you open it, the mysterious images are gone. What Am I?

Question: "Good morning!" - I appear again! Time for breakfast - I`m long as F*** Its dinner time - I`m crouching down Supper time approaches - I`m on my tippy toes "Good night!" - ...gone again... What am I?