Second screen for a laptop?

I'm looking for an easily detachable second screen for my laptop that you should be able to turn on to the right, left or top as you please. Is there such a thing? I don't know anything about that sort of thing. I'm not looking for a strong one, just want one to watch videos, because switching tabs bothers me a lot or on the phone, that's just not efficient.

Which one can you recommend to me?

Not to my knowledge, that would also put too much stress on the display's hinges.

Just buy one and turn it on?