It depends on what type of singing competition you are in, as well as funding issues. If it is a general singing competition, a small certificate is OK. If it is a school competition, it can be generally used. You can get commemorative T-shirts for daily life or leisure products. You can also wait for clothes. If it is a large-scale competition, of course it will be music-related speakers MP3 MP4 MP5. Microphones are generally not used by anyone. If the funds for creative competitions allow, it can be musical instruments, guitars, KeyBoard, etc.