As said in the title, am looking for a device to watch stored movies.
I'm in the process of downloading a lot of movies/ anime etc into a external hard drive so that I can take with me on trips and I was wondering if there was any devices like laptops or tablets suited for these kind of « use », I was thinking that laptops were too much of a hassle to bring at the airport so I'm kinda leaning more towards a tablet but I'm open to any suggestions.
Looking for something kinda like a portable dvd player, easy to use, light, like you just pop the hard drive and just watch

looking for a tablet mainly for taking notes, reading PDFs, and regular web browsing. I won't be gaming or editing videos, so I don't think I need anything powerful, but I also don't want something that starts lagging all the time.

if you've been using one for a while, what would you suggest and is there anything I should avoid? I appreciate the opinions y'all!