Magic baking powder. I just bought a new container in December when I made cornbread.
Jergens hand lotion -- but only the original cherry and almond scent will do! I've been rubbing this into my hide for over 50 years. I wonder how many vats I've gone through by now?
S.O.S. steel wool scouring pads -- nothing cleans pots and pans better! And they still have that distinctive blue soap in them after all these years. You don't argue with success.
Kleenex and only Kleenex. Any other brand is just sandpaper. Case closed.
Sunlight dish washing liquid. Oh, that distinctive yellow bottle and yellow soap!
Using these products is always evocative and nostalgic for me -- a direct link to my childhood memories.
What brands fall into that category for you?