I've become obsessed with Traveler's Notebooks, or more specifically, Fauxdoris. Traveler's Notebooks are leather covers with a system of elastics which hold inserts. The inserts are easy to swap in and out, and to me, it is an ingenious binding system.
Traveler's Notebooks were originally called "Midoris", after the company who made them. From the concept, people began making their own, which are loosely called "Fauxdoris".
I got to wondering whether this binding system might be good for an art journal, because I could make inserts from different kinds of paper (e.g. drawing, watercolor, canvas, etc.), and then swap them out as they got full. I made mine a little larger than the standard Traveler's Notebook size - mine holds signatures made from up to 9" x 12" paper.
Many Etsy shops are selling Fauxdoris made of leather or fabric. Always impatient, I grabbed a roll of vinyl shelf liner at the dollar store so that I could get started quickly. There is lots left on the roll, so I think I might try making a few other sizes. I've unleashed a monster.
Here, you can see my Fauxdori holding 3 signatures.