So I'm young, a freshman. And I didn't have any paper and didn't wanna try and make a bowl from aluminum foil. I pondered for about an hour, until it hit me. I have a trumpet (even though I'm a euphonium player at school) and trumpet have very small mouth pieces, about the size of a bowl. I melted the side of a plastic water bottle,and popped the bitch in there. Worked great, but a French horn mouth piece would've worked better.