I have stackable slide out basket units, one on top of another, in the closet in my studio. I also have some rolling bins, like for children's toys, under my HQ16. I have sorted all my threads for embroidery, sewing/quilting/ and HQ each separately. The embroidery threads are in boxes in a linen cupboard, as I don't use them that often. My sewing/quilting threads are in boxes in the studio stacked under the desk area next to my sewing machine. The HQ threads are in zippered canvas boxes from a quilt show. Each box groups colors for ease in finding just what I want.