I can't really think of any "outside the box" examples but more than once I have had situations where "I would not have thought of that" because it "can't be done". Examples:
Making tomato powder--dehydrate the tomatoes and then put them in the blender.
Freezing any kind of melon.
Thinking about washing/ironig 9+ yards of fabric that I plan to make drapes from--DOH--just take it to the Dry Cleaners. I will no doubt have the drapes cleaned to avoid washing them!
Making wine from dehydrated fruit.