Here many, many years ago I was going through my stored (at the time) C/L stuff to find that somehow, I still had a bit of fuel left in a gallon can of Fox Missile Mist. I ended up using the fuel and saving the can. Kept the can for years and years. (I think Fox Mfg. quit using cans in the late 70s?) It was in excellent condition. Well, many, many moons ago I ended up storing it up in the attic along with some other "stuff" that wasn't being used.
Fast forward a decade or two.
Shortly after re-activating my C/L hobby a couple years or so ago, I was up in the attic. While poking around I found the Missile Mist gallon can. Much to my dismay, it has imploded from the attic temperature extremes and is a total loss. Really sucks because I am a C/L nostalgic at heart, and seeing/having old things from my C/L youth years gives me warm fuzzies. I don't get warm fuzzies at seeing the old Missile Mist can now, instead I get PO'd at myself for not realizing what would happen to it up in the attic.
As for the fuel can guitars: Very neat. I do wonder what their connection to glow powered model airplanes would be??