I do as well, but sadly, within the US anyway, it’s become so homogenized that it’s getting harder and harder to do.
My thing was always…snack chips/crisps, candy bars, and pop/fizzy drinks, because it used to be, every region had a good sampling of their own, but now, “from Portland East to Portland West” (thank you, Louis Jones), it’s all Lay’s, Hershey, and Coke/Pepsi, as far as the eye can see.
Don’t get me wrong, there’s still some little local treasures to be found, but it’s harder and harder, and nothing breaks my spirit more than picking up a bag of something like “Raymond’s Old-Fashioned Potato Chips,” stamped with “A Peoria family favorite since 1909,” and thinking, “Great, a potato chip I’ve never had,” only to turn the bag over and find small print that says, “Raymond’s Old-Fashioned Potato Chips, a fully-owned subsidiary of Frito-Lay Corporate Megafood Soul-Crushing Conglomerate…you really think there are any independent snack chip companies left?! We own ‘em all, sucker!!!”