Preheat the oven to 350 degrees F (175 degrees C).

Mix flour, water, and salt together in a large bowl; knead dough until smooth.

Roll out dough on floured surface about 1/8-inch thick. Cut shapes with cookie cutters. Place on cookie sheets. Make a hole with a toothpick in the top of the ornament for hanging with a ribbon.

Bake in the preheated oven for 1 hour. Cool completely; decorate with paint and varnish to preserve, if desired.