Presentation Assignment Things

So now that I can't do my origional idea for my presentation anymore, I'm stuck in the position of finding something new to do. It's not easy, especially after that swing dancing one. But I think I may have come up with one, though I'm not sure how I can do it. I want to teach everyone how to play the Tuba. Why? Well, why not? It's used in New Orleans swing. And it's also kind of fun to play. I don't have a tuba, so that is what will make this hard to do. But honestly, if I could, how random and neat would that be?