Transform an elastic hair band into a one-of-a-kind accessory using felted wool -- made from repurposed old sweaters that have been shrunk until the wool is thick and ravel-proof.
To felt the wool, wash the sweaters in hot water and dry them on high heat. Repeat, if necessary, so that the fabric's weave is tight enough to be cut without fraying.
Layer several felt circles and a button, then stitch them together with embroidery floss. Tie the floss tightly around the hair band to secure.