Thanks, all. Man, I picked the right subject to stop lurking since 2007 on. :)
@Jon - Noted, elevate can.
@David - "Backpacking hot tub?"
@Dale - Thanks for the recommendations, and will get a proper can opener for around the house, but this is going to have to be done in the field, using a knife, on a recently emptied can, so practice, practice
@Marc - That pot looks suspiciously heavy. ;)
@Marko - Boiler bag! Which might cut down on the can-cutting and hilarious medical emergencies that would result, given my luck.
Bunting, for everyone's edification, are those little paper flags on a string.