Anything as large as FQ I keep in plastic flats. See through ones are the best for me. Yardage I keep in 18 gallon tubs. I label what’s in it on an index card. I separate by theme such as civil war, floarals. Separate tub for batiks. I label what color yardage it is. I have a special tubs for donated quilts to be made. I’ve used this system about three years. Has worked for me. Flats and tubs sit on shelves.