Before the introduction of glass beads to North America, porcupine quills were widely used as decorative elements in Native American textiles. The art of quillwork is still practiced today, though not nearly as widely as it once was. Techniques like embroidery and weaving are used to work colorfully dyed quills into intricate geometric designs on clothes, moccasins, cradleboards, and other items. During the 19th century, what quillwork item was popularly produced for sale to European-Americans? Discuss