What are you talking about? We've got potato launchers up here in Canada! I used to go to a friends cottage and fire them off every summer... well until there was a little too much "fire" in the firing
Lets just say long rest old black tube, she served us well for many a years.. but time passes and we must move on. I'm pretty sure were going to make a new one this summer.
As for hair spray.. we never used it. Good old WD 40 for us! (The old kind the new stuff just doesn't light)