To make salt dough, mix together 2 cups of all-purpose flour, 1 cup of salt and 1/2 to 1 cup of cold water until the soft dough forms. Start with 1/2 cup of water, and continue to add water until you reach the desired consistency.
Once the dough is made, divide it into smaller pieces, and roll it out to approximately 1/8-inch thickness. Using cookie cutters, cut out shapes, and place on wax paper-lined cookie sheets for air drying, which typically takes a day or two. If you make ornaments, be sure to poke a hole in the wet dough with a toothpick or drinking straw to allow for string or fishing line to be added later.
Salt dough can also be baked. Put cut pieces in an oven, and bake at 200 degrees Fahrenheit until the dough hardens. Baking times vary, but somewhere between two and three hours should usually harden the dough enough. After cooling and drying, use non-toxic acrylic varnish to paint your ornaments. To add color without using paint, include food coloring in the water. Add a ribbon or sturdy yarn to complete the project.
If needed, you can store prepared salt dough in a plastic container for later use.