Some have music and solar panels. Small wreaths used to visit graves during the Qingming Festival are usually made of flowers, paper flowers, plastic flowers and other materials. Small wreaths with music and solar panels also appear on the market for people to choose from. Small wreaths with music and solar panels are usually more expensive and need to be in full sunlight to work properly. Such small wreaths also need to be waterproof and sun-proof to ensure their service life and effectiveness.