Wolfie's bookmark obsession

Recently, for some reasons which I haven't quite understood yet, Wolfie has become fascinated by bookmarks. He noticed them on my books first, he asked me lots of questions about it, what I do with them, why use them, etc. Then he started asking to have some himself, for each and everyone of the big books he likes to read before bedtime. And he insists for the top of the bookmarks to be very visible, so he can find his page easily the next evening. Recently, he received as a gift from his maternal grandparents a very generous present: a subscription to a local bookshop. He will receive a book every month, for six months. He also got a free bookmark from the bookshop. His very first bookmark. Well, that got him over the moon with joy. So yes, that's the story here: Wolfie really loves bookmarks.