I fold all of mine using a 5.5 inch ruler. I also attach a one inch square of paper telling how much fabric there is on the piece. I store by color in 12 quart sweater boxes that are stored in an old bookcase turned on its side. I store large pieces on the bolt card boards that I ask for at the fabric store. My sewing room is neat, I know what I have and where it is. However, the scraps are a bit of a problem. They are stuffed by color in plastic bags in a cabinet. I am afraid to cut them until I know what I want to do with them.