A few thoughts on items to stockpile.
Bars of soap. I know you can make soap from fat and lye. This is what made me think of stockpiling soap. Good to have, good trading material, the perfect gift for spouse or sweetheart if the emergency lasts a long time.
Canned salmon. Shelf life several years — check the date on the can.
Lumber. Some 2X4s, some larger dimension lumber. Nails, lag bolts. Some sheets of plywood. A roll of heavy plastic. Maybe sandbags. Obviously this depends on your living situation, storage space, whether you’re in hurricane country, whether you expect shelter-in-place or get-out-of-Dodge.
My Mom passed away in 2010. When we cleaned out her house we found a crock full of her homemade lye soap which I will keep for “hard times.” I remember having to use it to wash dishes and thinking that when I grew up I would buy real dish detergent.
>> Lumber. <<
Don’t forget a handsaw. I picked one up at the flea market for $5.