In fact, the Plains Natives found many, many uses for the buffalo. Here are some of them:

Hide:
containers, clothing, head-dresses, medicine bags, shields, buckets, moccasin soles, rattles, drums, drumsticks, ropes, saddles, stirrups, knife cases, belts

Stomach:
container for carrying and storing water, cooking vessel

Tail: whips

Bones:
knives, arrowheads (ribs) , shovels, splints, paint-brushes (hip-bones), game dice

Hair:
head-dresses, saddle pad filler, pillows, ropes, ornaments