Does anyone have a list of all the wearable book items? I've been searching for one, but I can't seem to find any.

Don't know if this is all of them, but here are the ones I know of! Are you also looking for backgrounds with books, such as libraries and bookshelves? :o

Well, I'm mostly looking for book items that make backdrops (such as ).

Oh, I see! I misunderstood, my bad! I don't know of all of them, but this link is a good place to start~ https://www.subetalodge.org/list_clothing/shop/book_nook/rhigh/999/excludeub/true This is all the wearable items that restock at the Book Nook

there's actually an achievement for that; thus, wearable books are horribly expensive.

you can check the achievement Fashionable Reader here and the books it asks for are:

These are the only readable wearables (that is, the only books that can be read and added to the Wardrobe), and the only ones that will ever exist for a while.