My instrument's name is the Rubo 2002. I named it Rubo 2002 because the instrument plays by plucking the rubber bands on the plastic cup.
This is how it works: you take the paperclip and pluck the rubberbands. The vibration of the rubber bands goes inside the cup and sound comes out the tube.
I made the Rubo 2002 by taking the plastic cup and drawing designs on it. Then I put on the different length rubber bands. Lastly, I put on the tube, the ribbon, and the final touch. My instrument is in the string family.