In the run-up/down to Brexit I stocked up on things like pasta, tinned tomatoes, tinned potatoes & veg, yeast, flour, long life milk etc as I was concerned that supplies would be disrupted. Boy were my (elderly) mother & me glad that I had when lock-down happened a few months later as the shelves in supermarkets were suddenly completely devoid of these things.
My DH teases me that I keep enough loo roll & general supplies to keep us going for at least 3 months. 😂