Instead of using the very expensive traditional Montessori gold beads/rods, I decided to make my own beads using natural wooden beads on natural hemp string. I have only gotten as far as beads for 1-10 as seen in the photo. You can find supplies at your local craft store. I tried to tie the knots as close as I could to the beads on each end just so that when you line them up that it is a very clear pattern that the next number is one bead larger, etc. This time I lined them up to look like a Christmas tree for the holiday season.