Don’t throw away any remaining dough pieces! You can re-roll it once or twice to make more pasta, however, most people use it to make other pasta shapes like bow-tie. Alternatively, you can dry them and keep in the fridge to use in soups like lentil spinach soup or chicken noodle soup. Just add them in the simmering soup. Those pasta dough scraps will give a nice thickness and flavor to your soups.