What you need:
4 c. flour
1 c. salt
1 tsp. powdered alum
1 1/2 c. water
Mix ingredients well in a large bowl. Roll out, and cut in to Christmassy shapes with cookie cutters.
Bake ornaments on ungreased cookie sheets for about 30 minutes in a 250 degree oven.
Turn and bake another 1 1/2 hours until hard and dry. Remove and cool.
Sand lightly with fine sandpaper until smooth.
Paint with poster, or acrylic paint or markers.
Allow to dry then seal with clear shellac or spray plastic.
Makes 5 dozen 2 1/2″ ornaments.