I keep extra TP for short and medium term crises, but keep several bundles of wash clothes and powdered laundry soap and bleach for long term sanitation. One bucket holds a years long supply of these alternatives.
There is a lot of small and hobby farming here, many people would be adding or expanding gardens and life stock over night. The amount of old tractors and small farm implements and trucks and equiptment stashed in barns and garages here would amaze. The amount of wood working and mechanical tools, welding machines, sitting idle and for show in garages and hobby shops in the US is amazing.
Small shops would spring up out of no where overnight. I worry mostly about food for war or lengthy disruptions to bridge that time when gardens are expanding.
In my area canning jars would make good barter. People would be expanding there canning overnight. I tend to store lids in abundance as they are consumable over time.
If I lived in hurricane alley still, or an urban area, my barter would be water containers, small tarps and water filters.
We also keep a little extra on the OTC meds. But I fear that would be an awful lot of folks growing and brewing there own “medicine”
Again we don’t stock specifically to trade but keep extra of items we use anyway. This is like money in the bank of there is hyper inflation., as well as having assorted barter goods. As with the above writer from Bulgaria, we find that the stocks will deplete if not watched carefully. Often it’s not an issue of finances but simply noticing and buying inexpensive items like matches and such.