Artigianati.com

Stray buttons needn't be consigned to the bottom of the sewing kit -- a colorful assortment of these tiny fasteners can be used to perk up a table setting. To turn a cluster of Bakelite buttons into an eye-catching napkin ring, cut a 6-inch-long piece of 1 1/4-inch-wide elastic. Hand-stitch the ends together, and sew on enough buttons to completely cover the elastic.

SOURCE  _  http://www.marthastewart.com/good-things/button-napkin-rings?xsc=eml_crd_2010_03_09