I used to use those big black sketchbooks, the kind with the hard covers--I kept one for years during college--a few shots of it are at that link. In grad school, I discovered the amazing National 43-581 chemistry lab notebook, with its blue hard covers, stitched binding, and green narrow-lined paper, which Missoula legend said was the notebook Richard Hugo favored for his poems. The photo above is one, containing the beginning of a lousy short story. I actually ordered a few of the smaller size today, the 43-571. In the pre-Moleskine era, these were as sweet as it got. I have also been using a Moleskine-knockoff hardcover notebook for music for about six years now, though the binding is shot and the elastic band is completely dead. There's a pic of it in that set.
I actually quite like the Moleskine notebooks these days, trendy as they are. Not many manufacturers line their notebooks narrowly enough for me, but those little brown Moleskine journals hit the sweet spot.
As for these photos, I love the serendipitous beauty of handwritten notes--but, paging through these, it was sometimes obvious that I was trying to make them look beautiful, and thus they looked stupid. Maybe it's my own former innocence I find appealing, who knows. Anyway--post some notebook shots, if you got 'em.