Answer:
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
What can be swallowed, but can swallow you?
You can tumble in it, roll in it, burn it, animal eat it. Used to cover floors, still used beyond stall doors. Freshens whatever it is placed on. Absorbs whatever is poured into it.
It is the electronic version of junk mail or a salty meat in a can.
I'm light as a feather, yet the strongest man can't hold me for more than 5 minutes.
What did the piece of wood say when he saw the screwdriver and screws approaching?