for the cones I use on the long arm, I have them sorted by color into 2 "layers" of plastic tubs---I took a deep plastic tub and set a 8" one of the same width & length into it--so I have 2 layers for cones in a tub that I can seal and not have to worry about dust. Since I put any leftover bobbins with the cone(inside the cone) I slip each color (I have 2-3 of most colors) into a baggie to keep them together.