I did something similar - except taped my swatch to an index card having the swatch go over the top edge (taped on back) to better compare different fabrics. Using my printer used the postcard setting creating a grid I whipped up and mark where I got it from, how much it cost, where stored, how many pieces, plus length. Sounds complicated but was super easy and visually easy to see/read. I file in 2 index card boxes - one box is by color, 2nd is for my 1/8th inch and below blenders, child fabrics, and non-cotton fabrics.