We have a local "little library" aka "sharing shelf" aka "free opshop"... I trade out books there with the district, some interesting things come through (and a lot of crap too!)
I keep a library with all my reference books (native plants, birds, gunsmithing/reference, engineering, medical/rongoa, automotive manuals, dictionaries, bibles, cartoons...) and tend to rotate out the novels, though I keep the classics.
Still on the lookout for footrot flats! Grandparents used to have just about the whole set, which has disappeared to time. Also Calvin Hobbes.
Got a few things on PC too, which is a pain in the ass as I'm never going to sit and read a book on the computer, and don't have an e-reader...