I have a Voyage, all 3 models of Paperwhite, 3 Kobo Auras, a Nook Glowlight Plus and a Kobo Mini. I also have half a dozen phones, although only one has service, about a dozen tablets of various ages, all still easily usable.
I have a partial excuse in that living in a retirement home in rural Arkansas with neighbors with no tech knowledge, some of whom love to read and watch old TV shows, I'm always loaning them out. if I didn't have that excuse I'd have to think of one.
Barry