your idea made me think of those little children's blocks that make farm animal noises -- don't think they would be washable, though...maybe if you could tie them on with ribbon somehow & then untie them before washing...sounds interesting, but how do you keep these things from being harmful? [going in the mouth?] i think i would keep them separate from a quilt -- maybe like a little dashboard with velcro things on it.......can't wait to see what you come up with