Better than salt dough? 1/2 cup cornstarch, 1 cup baking soda, 3/4 cup water. Cook, knead well, shape, bake at 175 for about an hour. A commenter said; "Each year I make Xmas decorations with my preschool class and have even used it to make beads and pendants. We paint ours with strong food colouring and then give them a final coat with white glue. Undiluted glue gives a thick clear glossy finish and it makes the colours more vibrant."
Salt dough recipe: 1/2 cup salt, 1/2 cup warm water, 1 cup flour. Rolled out the dough and cut the shapes. Then poked large holes for the string, baked them at 250 for around two hours (until hard all the way through), painted with acrylic paints if desired- cute idea for a necklace or gift tags