I don't think stickers and cards will be replaced by their digital counterpart. I mean, there's a kind of magic in opening a packet and gluing the stickers one by one in your album, and that cannot be replaced by a software. Maybe they can coexist, like they do in some way nowadays (the virtual album have less stickers and can be filled with stickers you can get with the codes inside packets).
I think the same happens for books. It's because both are non-massive hobbies (let's be honest, most people nowadays spend more time doing other activities rather than reading a book). But there will always be people who consider them cult activities. I would include vinyl discs, too, but it's harder to say because music is not actually a physical "thing", it will always be virtual regardless of the support format (vinyl, CD, casette, mp3, etc.).