I use 12 X 12 card stock from the scrapbook store. I buy it on sale usually about 10 cents a sheet. I fold it in half and wrap everything around it that fits. I use pins, hair clips, and bobby pins to hold it on. I put mine together the way I will be using it. Anything for a project I keep together. Batiks together, civil war together, lights all together, reds, blues, yellows, greens, Christmas together. When I start a quilt, I assign the pattern and fabric to a 12 X 12 plastic Art tote with a handle. I cut out all the pieces, and organize them in sandwich bags. This I take with me when I go on retreats so everything for each project is in its own carrying case.