I smell Science Fair project: a demonstration of how pipe lengths relate to resonant frequencies. Plus, you can hit it with your show, Khrushchev style.
I'm pretty sure the last video of someone playing PVC pipes like this that we had on here (that guy playing some video game theme or other - Zelda maybe?) literally WAS the result of a science fair project. Thsi one's better though (and WAY less lame than fucking Blue Man Group, who might well be patient zero for this stuff).