I use two different methods: first, a wooden rack, commercially made. I had to modify it because the little dowels were too short to hold my small cones. Drinking straws work wonderfully and they fit snuggly over the dowels. I cut the straw in half, fit it onto the dowel and now have room for the cone and its bobbin. Which brings me to the second storage method. At the hardware store, in the plumbing department is clear tubing. I get the 1 inch outside diameter tube (you buy it by the foot) and use my hose cutter to cut 1/4 inch slices. Then I cut them open (into a "C" shape). These fit perfectly over my bobbin, are easy to put on and take off, and because it is clear, I can see what color thread is on the bobbin. Out of a foot of tubing, you can cut a WHOLE BUNCH of bobbin minders (and it only cost about $1.00)