This is the coolest and easiest thing I have ever seen! Why didn't we think of this sooner???
How to Make Playing Card Notebooks: Accordion-Style
You could use all different kinds of cards: antique playing cards, novelty playing cards, tarot cards, maybe even ATCs, or business cards! And you could make it a mini-scrapbook album or write a poem in it or you could make it into an ATC album thingy!!!
Kewl! N'est-ce pas?