Piping tips are specialized tools used in cake decorating to create various designs and patterns with icing or frosting. They come in different shapes and sizes, allowing decorators to achieve effects like rosettes, stars, and borders. Common types include round tips for writing and star tips for creating textured designs. To use piping tips effectively, it's important to fill a piping bag with the desired icing and attach the chosen tip securely. Practice applying consistent pressure while moving the bag to create even shapes. Cleaning the tips after use is essential to maintain their functionality and prevent clogging.