Having money saved but easy to access has been invaluable to us a few times. Like when the boiler blew up 4 days before Christmas 2 years ago, or when DFIL suddenly became terminally ill hours away and we only had 1 car so needed to get a 2nd one fast so DH could be there and mobile, and I could be here with DD at school but get down there as well.
For us, we all have a lot of clothes, suitable for various occasions. As DH and I have both had to attend very formal events at very short notice. But also that we are very busy, so we wash and dry things all week but only fold and sort at the weekend, and sometimes life gets in the way of that (weather, too busy, DD having difficulties etc) - but by having a lot, we are under a lot less stress to HAVE to do laundry on a very frequent basis.
I also do things like keeping all passports and paperwork together and up to date. And both of us have a habit of refilling our washbags as soon as we get home from trips - so that we can grab and go if necessary (mostly it's work travel and there is some notice but I have gone the same day a few times, but when DFIL was ill, that was a case of 5.30pm call while on the train home and being on the road that night, and then spending 6 weeks constantly up and down the road with DH effectively moving down and DD and I going every weekend, and very frequent weekend trips for the following 4-6 months).
Growing up in the rural countryside in the 1970s/80s, with frequent powercuts and rampant inflation, I know the value of a proper pantry. I might live in the suburbs of a city now, but life is hectic, so I have a fairly well stocked kitchen generally and can manage without needing to go to shops other than for milk and bread for a good while if things get nuts. But it meant that for things like bad storms, winters with bad snow (eg. 2009/10/11), or when Covid struck, we have not been needing to rush out and panic buy everything in sight. We tend to have the ingredients to make a range of meals and snacks, and enough to keep us going with minimal extras.
And the same for first aid/medicines, and fuel for the fire. I always have a reasonable stock of things we use a lot. I buy my firewood when I still have a full sack left, or at least 2 weeks before Christmas, or as soon as the longer range weather forecasts have seriously bad weather in them - depending on what I need at any one time. And we always check that we still have gas for BBQ at the end of summer - as that is a very useful alternate cooking method if the electricity is out (gas hob needs electricity for the safety mechanism to work).
I am working on decluttering at the moment - reducing the overstocked pantry I had because of covid/Brexit combined, and the inability to get things we normally would, throwing out older clothes that I will take a long time to lose (covid 2 stones) weight to fit and which are less loved, sorting the paperwork basket which we had ignored for 3 years (bills paid but thrown into the basket to file later) etc.