I made lap quilts for my DD and DIL for Christmas and used Minky for the back, the "dot" style, not the plush. I didn't do any fancy quilting, just SITD on one with tacks in the center and a serpentine stitch on the other. I washed them when done and they came out fine. I spray basted them. You can see them in the thread "test for loading pics"....don't know how to post a link to it! I was trying to test how they would look and ended up with the final post under that title and was very disappointed!
test for loading pics
Don't know if that will work or not!