|I know the tip about "match box" car cases has been posted before, but I would like to add to this. I have used the cases for several years to store my embroidery thread - a perfect fit. After being so unorganized with my sewing thread, I knew there had to be a better way. Car cases to the rescue! Each case has 48 "compartments" which will hold a spool of thread AND the matching bobbin. I arrange these by color, starting with the darkest thread and working my way down to the lightest. Now there is no more searching for the right color thread. A quick glance at the cases and I can find the perfect thread and bobbin. What a time saver. Hope this is helpful.