My Lucy loves quilts but she also likes the toys I make her. I traced a dog bone treat and blew it up---cut it out and stuffed it, went to the thrift store and bought a couple of animals with squeakers in them and put them in the bone---she loves it. Also took 3 pieces of fleece cut 3 inches wide by width and braided them together knotting at each end and made her tug of war rope. The vets say it is easier on their gums than a rope and I can throw it in the washing machine to clean it. You could make a smaller one and a larger one for them. Denim sounds good for the quilts---I would definitely recommend at least 1/2 inch seams and quilt them close by machine.