I've heard some talk about using T-shirt materials for quilts. I think they iron on a backing (maybe pellon) So it does not stretch when sewing... I think it would be a nice quilt. Especially if you have T-shirts with decals you like on them and put it all together. With the pellon I would assume one could use reg: cotton on back. sounds fun... Ask one of the moderators... I know Debbie mentioned doing a quilt with T-shirt materials once. have fun... :)