I bought a wireless USB flash drive last year. Holds a bunch of movies, documents, anything you want. Load it up on a laptop or whatever and then connect my ipad to it wirelessly wherever I am. I can watch a movie anywhere with no internet access needed; on a plane, on a beach, wherever. I bought it as I only ever travel with an ipad (no usb port) and I often need to edit, save and print documents. I save them to the usb stick and can take it anywhere to print from. But it comes in very handy for movies as well.

https://www.sandisk.com/home/mobile-...wireless-stick