When we had an outdoor dog who had an igloo dog house, I measured the base of the dog house and made a big bag out of burlap that I bought from Joann's and my DH then filled with cedar chips. She liked it.
My indoor dog who was 60 pounds, did not like dog beds at all. He would only sleep on rugs. So I would buy 4 of those nylon braided rugs from Wal-Mart and sewed two sets side-by-side, then layer then so it would be double thickness and used a large needle and cotton crochet thread to sew the layers together so they would not shift. He loved it and it was big enough for him to stretch out on. My youngest, who was 9 at the time, grabbed the dog bed and used it for a floor pillow - go figure!