There are invisible threads that are not pokey...YLI comes to mind..it is a very soft thread, and I have ironed over it and it has not melted. I don't know if I would use it for a baby quilt, but I have used it a lot. It comes in clear and a smoke color...which sews out as a pale grey...depending on what colors you sew with, the clear is good for whites and clear colors, pastels, and then the smoke for just about anything else. The clear will look too shiny on darker colors