Have an adult play a song or video that they liked when they were your age. How is it the same as the music you listen to? How is it different?
Create an instrument from found instruments in your home.
Make up a dance to a piece of music of your choosing.
Deep listening to a song - How much can you identify? the instruments? the structure? the form? the chord progression?
Transcriptions - Can you sing a vocal or instrumental solo from memory? Can you play it on another instrument? Can you notate it?