Gee, you've gotten a lot of great ideas. I'm not sure I can add more. Some things I've tried lately:
REPACKAGING. Buy a family pack of hamburger. Plump it up with a cup of bread crumbs, eggs, spices. Shape about thirty in to meatballs, broil them both sides and freeze them. Shape a whole bunch more in to burger patties, wrap them in saran wrap and freeze them. Shape the rest in to meatloaf (I use disposable tin pans) and freeze them.
I take a package of bacon and re-wrap in single serving sizes. When I am ready to cook, I take out the frozen slices and lay them directly on the pan. This saves the bacon from going bad in my fridge while they wait for inspiration to strike me.
There's a few items I keep on hand always. With these few items I can make biscuits, pancakes, breads, etc. etc. and I know we won't starve. Eggs, Flour, (baking powder, salt), margarine or butter, potatoes, powdered milk.
Eggs. Gotta love them. Complete protein, a great binder, and you can't make pancakes without them. Well you can, but they won't be nearly as fluffy. I have a great recipe for Breadmaker Challah bread where some of the rise comes from the egg. It's the best breadmaker recipe I have. http://www.williams.edu/Astronomy/people/kkwitter/breadmaker.html
I used to have potatoes on my list but I've developed an intolerance. I'm experimenting replacing them with yams or squashes.
I'm not a big soup person. It has to be thick and full of interesting things. Try adding tomato paste or sauce. If the stock is too sweet, add salt. If it is too salty, add sugar.
My financial counsellor delicately reminded me that I probably have some interesting things hiding in the back of my pantry. At the end of the month, I pull out those rarely-used items and get creative. I've learned that I can make up to two substitutions in a recipe, but three is usually too much.