I wouldn't call it Scrap Vomit either; be willing to bet you were joking about that. Please prewash the batik and any other really dark fabric that might cause problems. As far as combining fabric types (not quality), that's up to you. Everyone has their own opinion as to why or why not; none are really wrong. That's why it's an opinion not a fact and you get to develop those that all your own.A few people have mentioned throwing out the poor quality fabric. Instead of that the idea of using it to practice cutting and getting your seam allowance correct is great. Then, because it will still be poor quality, donate it to someone for stuffing for bears, dolls, or my favorite. someone who makes beds for shelters or rescues. I wouldn't make it into finished beds/pads because these items must be washed hard and often, so will probably break down fairly soon and could cause injury to the animal. At the end of it all have fun; life's too short. Good luck and let us see what you decide on. Joyce and the beagles pack in DE