I like Jean rag quilts, not so much bulk in the seams. I didn't put anything on the back. It was heavy enough. I made it with 8.5" blocks. I saw one made with 6.5" blocks and bandanas. They had sewn the bandana fabric to the jeans fabric with a big X through the middle. No batting. Then they alternated which fabric was up. It was also a rag quilt. I think flannel would look nice also. Just be sure to prewash the flannel because it will shrink. Keep us posted on what you decide. What a nice way to get a hug from your dad anytime you need one.