My parents (and grandparents, I think) used to put batteries in the fridge. I did too, until I learned that it’s not a good thing to do. Something about the humidity.
I do freeze bread. Mainly because the bread I can eat (gluten free) is expensive and not easy to get in the size I like (there are sizes!), so I buy multiple and freeze the excess. I also freeze my ground coffee (I really should start grinding my own; with the horror stories I’ve heard about pre ground…). I do refrigerate butter, jelly, ketchup, mustard, mayonnaise, and hot sauce.
¯\_(ツ)_/¯