Quill baskets are custom works created from porcupine quills inlaid on a birch bark backing. Quill inlay was originally used on birch boxes produced in a variety of geometric patterns to make designs. Frey has taken this ancient technique and used it to create images. These quill designs are in and of themselves works of art which Frey mounts on the covers of his baskets. To have one of these images added to a basket would typically start at $1000 and be determined by the complexity of the image.