Help! Bookish secret santa ideas

Edit - I should've mentioned that I wanted to gift her a book/ book package and not any merch because she is not someone who prefers them. I might be too early for this but I seriously need time to research properly and choose the perfect gift. Every year me and my cousins do a secret santa thing around christmas. This year, I got my cousin (let’s say Mary) who absolutely loves books just as much as I do and for this very reason I want to give her the absolute best thing I can. She is lovely and I adore her (TMI) I need good suggestions or options if there are any brands (Books based) doing secret santa things? I’ve heard of one or two but not many. Or if any of you have some ideas, feel free to drop them as I could use the help 💓