Answer:
If you look, you cannot see me. And if you see me, you cannot see anything else. I can make anything you want happen, but later everything goes back to normal. What am I?
I am taken from a mine and shut in a wooden case from which I am never released. Yet I am used by almost everybody. What am I?
I help you carry your books.
I go around and in the house but never touches the house
Digital white-out.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?