Keeping track of your nestabilities

Do you find yourself buying more nesties only to realize you may already have that set? Well, I made this little set up for me and it helps me remember what shapes I do have. I cut out each shape and put them on one of those book rings (you get them at Staples) and then added a few pieces of ribbon to make it pretty. Its small enough to fit in my purse or I usually just keep it in the car. Feel free to copy my idea :).