Screen protector! I hate any marks on my device screens, so it’s a must for me. IMO any cheap set of glass screen protectors on Amazon look exactly the same as the expensive ones. Plus they come in a pack of a couple normally so you can mess up and not pull your hair out. If you do see a big difference in clarity w the cheap ones after installing, then bite the bullet for a fancier branded one.

I also like skins on my consoles for the same reason. Protection and some added flare.

And an extra charger with a long cable. Easier than dragging it around the house back and forth.