I named my instrument Pop Band. It is in the percussion family. I found the materials at my house. I found the rubber band, noodles, and rice in my room, and the pop bottle in the kitchen, and in the bathroom.
My parents did help. I did most of it. It took me a while to find the materials, though. All I used was my hands and a rubber band, and a pop bottle, and toilet paper roll.
It changes its pitch by snapping the rubber band and pounding the pop bottle, and by shaking.
I liked this project because now I can annoy my brother and sister.