Canned food on sale is a great micro-prep.
I got canned pineapple (Dole) on sale four years ago, at ten for a dollar, and canned peaches (Del Monte) almost as cheap a few months later. The pineapple “expired” 30 months ago. I just had another can this week, and it was good. The kids didn’t notice any difference. I noticed a very faint hint of a metallic taste. Canned food is good long after its expiration date - and I’ve been experimenting with that over the past few years, especially for fruit. No one seems to notice when canned pears/peaches/pineapple is a couple years past the date. I’ve taken to keeping enough in the house to always have 200 small cans, and eating two cans a week. We’ll have two year’s worth of a little fruit a couple times each week if anything goes wrong.
Whenever there’s a great sale, I get more.
You remind me of my parents whenever there was can goods on sale. We would head out to the store and buy a case instead of a few cans. My father would ask the clerk if he can bring out a case for us, and yep he would. Your right, can goods sale is a good way to start prepping.