Space Nuts At Lightspeed

I have been reading a story set in the future called Space Nuts Light Speed by Simon Cooke. Just like in this story, I have written a historical file about an object we use on earth, that someone could read about in the future.I am making a historical file about DVD players because I think that they will make something bigger and better.DVD players are things that look like a rectangle and reads a thing called a disc.I think that in the future they will just put movies onto tiny little tablet type things and put them into a big screen and the movie will play.