I actually was playing with making an origami business card holder for those moo cards you see in the middle photo. While playing with some paper folding, ended up making an origami notebook instead, and slid the moo cards into the side pocket.

The notebook is a design I took from one of my origami books (Origami: The Art of Paper Folding by Gay Merrill Gross). I used a faux aligator skin textured paper for the cover and the pages are accordian folded.

I've actually been toting this along with me for my daily todo lists--as an adjunct tickler to the many 3x5 index cards that sit in my Action folder.