My grandmothers family came from North Carolina, and although I never saw a powder gourd. My great,great grandma had a sewing box made from what they called a half-a-bushel gourd. It had been grown in a square basket made from hickory splits, and woven. The gourd was square, and had the pattern of the basket in the outer surface. Most folks wouldn't have known it was a gourd except that the lid was the top of the gourd.
Hungry Horse