Absolutely correct. I have hundreds of can openers; I can trade them for canned goods if TSHTF. My father-in-law owned a liquor store, and my wife got over 1000 can openers when he passed on. She gave away half of them. Don't know why he had so many, he got them free while selling beer. Also got lots of whiskey, which is as nice as having gold.
Agree on the whiskey. Good for trading and treating wounds. ;)