Location: The bag of kitchen-related items I had packed for use while camping on my cross-country trip last month. Which, of course, I never got to use after hitting the deer in North Dakota; the bag was left with the car while I flew to Seattle. I packed it away with my camping gear and forgot about it - can opener included - until suddenly remembering it yesterday. Mystery solved.
Cans of Spaghetti-Os consumed since can opener was found: 2