Personally my prepping is for snow. I'm in wales in an area that kind of resembles peppa pigs world - where houses are each on their own hill (luckily flooding is one thing i dont need to worry about!)
Online shopping getting out here in snow is unlikely due to the uppy-downy-ness of the roads. Within reasonable walking distance is a spar and a newsagent, and Fresh stuff sells out quick when there is so much as one flake in the air. Not that i could get to the shop if it snowed, as snow isnt particularly wheelchair-friendly!
So i like the have a week or so of spare food, so i'm not relying on everyone else every time the weather turns
Then (again, thinking minor weather 'disasters' like heavy snow), i keep things like candles and spare blankets for power cuts or the gas going off (as well as a large stock of board games!) And then drinking water for if pipes freeze. And spare prescription meds in case the delivery van cant get out to me. And as well as home stuff, we have some bits and bobs (blankets, drinks, snacks, map) in the car in case it breaks down.
I dont think of these as zombie prepping, just sensible stuff that everyone should do. But things that require some forethought and could do with a topic of their own.
If the zombies do come, fuck prepping - its painkillers and gin time for me!