To make custom number tags, use a Silhouette die cut machine to cut numbers out of card stock, and press the numbers into flat circles of polymer clay to form an outline. Cut a small circle in the top of the clay for string. Fill the number outline in with paint after baking the clay, and tie string to the finished project before displaying.
Use a rolling pin to flatten oven-bake polymer clay until it is about 1/4-inch tall. Use a cookie cutter to cut the clay into 10 equal circles. Lift the clay circles off the work surface with a razor blade, and place them on a large piece of parchment paper. Use a straw to poke a small hole in the top of each clay circle.
Cut ten numbers out of card stock in the typeface of choice with a die cut machine, and roll them into the clay, gently, to form an outline. Bake the whole batch on a cookie sheet at 275 degrees Fahrenheit for 15 minutes. Once cool, use silver metallic paint to fill in the numbers. Once the paint is dry, tie string to the holes before displaying with household decor such as wicker baskets.
Alternatively, use salt clay, made with flour, salt, and water, for an all-natural alternative to the polymer.