SINEW: The most important development in Native American Art and also economic development in the past 100 years has been the invention of Sinew. Historical sinew which was used for sewing was the tendons of a deer or elk. But at some point in the past century someone invented the modern waxed polyester sinew which is a mandatory part of every Native craft box.
NEEDLE: Glovers Needles are for sewing leather. Each needle has a point with 3 sides to it which cuts easily through leather. Glover needle sizing are inverse of common sense. The largest needle is sized # 3 and the smallest is # 9. The most common needle size for sewing leather is either 5 or 6.