I used to be good about keeping enough cash to get me through about a month, I started it when the financial crisis hit but have fallen out of the habit again.
I have a fair amount to get us through the major crises that are likely to happen around us - power outages, weather problems, job losses etc. I keep meaning to set up BOBs (Bug Out Bags) - not that I think we are likely to have big reasons to abandon the house, but the most likely would be fire so having docs and emergency supplies would be useful.
I also don't have specific SHTF (shit hits the fan) stores, but have a general level of preparedness that would cover most situations except the really dire. We have food and water supplies, first aid, lighting and heating solutions etc. all readily accessible. But not gathered together in 1 place, more situated where they would normally be used and where everyone knows where to find them.
I am watching the weather forecast closely this week as it happens, in case it gets snowy here. I will probably do my weekly shop earlier than normal for that and general family life reasons - and make sure that a couple of things that ran down before and over Christmas are replaced (like hot chocolate powder and dried milk - which become hugely popular when very cold weather hits locally).
But I find that if I have thought ahead about potential problems, and potential solutions, I am more aware of when those problems are getting to be a bigger likelihood and then can be organized in advance in case it does happen.
If there is a major apocalypse type event, I am probably a bit screwed, although we could manage for a long while and probably better than many locally. But it could get interesting before things improved though.