Sorry, hit send too soon.
I have a decent amount of no -perishable food in stock, because we have times that life gets chaotic and we need to just eat without shopping. I also keep the freezer well stocked. Partly it is making sure I have things we will use and that gives us a balanced And reasonably nutritious diet. Partly it's about bulk buying things we will use anyway when I see good offers - bogofs, reductions, vouchers, yellow stickers etc. (E.g. M&S can have very good yellow sticker offers on meat and fish if you hit the right day - so freezer space is good to have). I also batch cook when I can, and like a pp, freeze in single portions to quickly expand a meal if extra people arrive for some reason (not unknown), or suddenly plans change and it's all 3 of us not just 1 for dinner. I tend to do both 2 person and 6 person versions of lasagna etc for freezing (6 does either 2 nights, visitors, or I can refreeze portions that have been cooked as single portions to reheat as I freeze them uncooked initially). Even things like leftover roast meats are useful - large amounts are reheated in gravy for a regular meat/spuds/2 veg dinner, but small amounts are thinly sliced to toss into stir fries.
It mostly started from a frugality mindset.
But we've had power cuts, water failures, local floods, etc to deal with even in the city. I keep my 1 ring gas stove for camping in the shed even though my main camping gear is in a storage unit a mile away - which was useful when we had a power outage for boiling a kettle. We also have a gas bbq that has been tested in snow conditions which would also help cooking needs anytime.
I have plenty of torches and lanterns etc for camping, which are also kept at home. And a solar panel to recharge a few of those. But we also like candles anyway so have plenty of safe holders, particularly nightlight type candles, and a stock of candles and matches.
We eat batteries in this house it seems. I really want to get rechargeable ones, especially now we have PV solar panels on the roof (only a few weeks). But I buy these in the large boxes (24) in AA & AAA sizes, and keep a few C, D and small round ones on hand too for lesser used items.
Decent first aid kit, which has been used for various needs over the years, both here, neighbours and on camp. And I keep my 1st aid cert up to date.
General tools to fix things, and supplies of screws and nails, glue, tape, cable ties, etc. To deal with household emergencies. And Ppe for that too (gloves, masks for dust, helmet, steel capped boots etc), and things like safe ladders, buckets with handles, rope to move items safely/hooks to hang items while working leaving a hand free etc.
I used to be good at having a bag ready to go, but fell,out of practise. But I have a small box of tools, torch, knife, tape, tissues, hand sanitiser, work gloves etc in the car boot, a rug, shopping bags etc and I keep water there as long as dd hasn't discovered and "borrowed" it 🙄. In winter, I tend to have spare gear there too (hat, gloves, socks, hoodie, etc) especially if bad weather is due.
We have multiple sources of heat as we,ve had problems with gas supply on occasion etc. So plenty of wood for the stove, hot water bottles and blankets, and candles also are useful on occasion in a single room.
Medicines for my needs but also general over the counter ones for cold and flu, cold sores, upset tummy or gut, pain relief, hot and cold patches for pain, antihistamines etc. As it's usually middle of the night or as we leave on a tight schedule or some other inopportune time that illness hits my family.
I do keep a couple of 5l bottles of water for drinking, I have a 10 l barrel to fill if we get warning of problems, and we also have a water butt in the fog Arden which mostly waters the garden but is used with buckets for flushing loos when necessary. As even in the city, we've had major water problems (which went on for a couple of months during the "Beast from the East" winter some years back).
And I also keep physical books with emergency advice etc - because electronic devices may not work in an emergency. So a 1st aid manual, DIY manual, cookery books etc. But also books to read and enjoy, board games and other non-power-requiring hobbies.
I have had a purse, hidden but accessible to the household, with enough money for an emergency shop (bread, milk etc) in case anyone ever needs cash in a hurry. It's useful for doorstep sponsorships, dd forgot she needed money for school until 8:30am, grab a tenner when meeting someone for local coffee when my wallet is empty etc. And I keep a purse with change in my car, for car parking machines but also handy for vending machines etc. on occasion.
I don't do weapons.
I have a storage unit - we got it for attic stuff when converting the attic 14 years ago (☺️) and keep it for things like seasonal decorations, things dd has grown out of, camping gear, useful stuff that others in the family will need that we don't use now, etc. We don't keep food there. I do sometimes put Christmas presents there over the autumn as I start buying. The resucci Anne that work donated to my Scout group (the kids get to use it frequently, but to keep it functional, I store it away from the Scout Den). That sort of stuff.
I had an allotment before life took away the time it needed. I grew veg in the garden until the dog arrived in our lives last year. So now I just buy them, but can grow more again on window ledges, in hanging baskets etc if it's needed in future.
I have visions of a small holding, including a basement, for my retirement. But that is probably a pipe dream in reality.