I fold my fabric selvage to selvage and roll it up on my 8 1/2 X 24 ruler. Slide the ruler out and then I put a tag inside with how big this fabric piece is, and then fold it in half. I then stack on the shelves in my wardrobes according to color or theme. I don't have to measure the piece of fabric again, because I have already tagged it, so I know instantly if it is big enough for the project. Fat quarters are stacked on end in plastic drawers, so they are easily identifyable.