With a few simple tools you can get amazing results. We used ping-pong balls, rubber bands, thread, bobby pins, and sewing for our bound resist. In the left of the piece below you can see the small circles from pinching and binding small sections. The large white area on the right side is from pleating and pinning the fabric.
A beautiful blue-purple ombre can be seen in the top right below. Her piece was bound rather loosely and didn't spend as much time in each dye bath. The piece to the left top was bound very tightly and almost completely, resulting in large white areas. I'm very happy with the "indigo" look that we got from Procion MX Navy blue.