Tobacco and pipes/rolling papers, booze in pints and 5ths, and reliable less expensive revolvers in .22 long rifle with lots of 500 round bricks made up of boxes of 50 rounds each. Great trade items.
Salt, too.
Salt is critical for survival and not easily gotten in many parts of the country.
If some major event happens and the supply chain is disrupted, salt will become hard to come by.
Now is the time to buy it.
I really realized that after reading Alas, Babylon, and One Second After.