Here is a good idea , its a baby teething towel. you use the plastic that is in cereal boxes, cut it in square or circle then sandwich it between material like flannel, and sew it up
u can quilt a little figure on center it crinkles and makes noise for infants when they hold it or put it in mouth and its safe
also i make change purses they are easy popular. Had a pic on line here almost have tutorial done