Realizing that these cost between 15 and 25 dollars depending on the size, I decided to make my own. It was easy. With 2 pieces of fabric, on one you just pin the ribbons along all four sides. Lay the other fabric face down on top, Sew along edges except a small spot to turn it inside out then sew around the whole edge.
A cheap, easy to make toy that will keep your dog busy for like, minutes! ;P