The insides are these sturdy, creamy beige pages. I've used this exact type of album to teach undergrads about medieval manuscript practices. We'd copy in bits of literature as if we were scribes, then annotate each others' work in the margins. Those that got it thought it was kinda fun. You can't tell from the pics above, but this album is pretty large.
The next step would be to take two copies of your favorite old school product and destroy them by cutting them into individual sheets. That's the crazy part. With some rubber cement or similar adhesive, attach each page to a sheet in the album, in order.
Then take this monstrosity to conventions and gamestore events and invite people to annotate the text. Maybe they want to clarify a rule or argue with the author or tell a brief story about their favorite monster or magic item. Whatever they want to say, invite them to say it. Maybe they see a comment from someone else and want to respond to that.
The result is that pages in the album would start looking like this:
I think this would be a fun way to collect the opinions and experiences of a wide ranger of gamers. It'd probably be a hassle to lug this big thing all over a larger convention, though.