Put all three ingredients in mixer bowl (or large bowl to mix by hand)
Knead the ingredients together until a ball is formed. The dough should be stiff, and neither wet nor crumbly. Adjust the flour-to-water ratio as needed.
Roll out dough on a floured surface and use cookie cutters to cut out desired shapes, or take a small handful of dough and press it into a floured springerle mold. You can also press springerle molds into rolled out dough and then cut out the shape.
If using as an ornament, create a hole in the top with a straw, toothpick, or skewer.
Bake on a parchment paper-lined cookie sheet in a 200-degree oven for about two hours or until the salt dough is completely dry.
Allow ornaments to cool, then decorate or hang on a ribbon.