Well, aside from the obvious — books, of course — here’s a British site (courtesy of my wife) that has a huge array of items that booklovers of all kinds would like. I especially like a couple of the t-shirts (“Careful or you’ll ed up in my novel,” “Hollywood: Ruining the Book Since 1915,” and “Unreliable Narrator.”)

Or, if you really love the bibliophile in your life, you could buy them a house made out of bookshelves.