Archaic monster that I am, I prefer paper books, and I’ll spare you the whys. I also have an e-reader. It is a small and entirely outdated Kobo Mini. Here it is:
It’s got a small screen, has no light, it’s slow, has only 2GB of memory, an e-ink screen two generations behind the times, and it’s not a Kindle. It’s perfect. Again, I’ll spare you the whys, except to say that it serves my basic needs and addresses a few dislikes I have for the Kindle. And it fits in my back pocket in a pinch.