The list author says: "It's funny and sometimes quasi-useful to read about zombie survival and all that, but in my humble opinion, zombies are not a viable focal point due to lack of reality. I think we would be better served to prepare for a complete collapse of civilization, where your greatest threats are surviving nature off the grid, and surviving other survivors. We humans have a very long history of doing horrendous things to each other, be wary. Think about how psychotic people can be driving, and that's in the face of law and consequences; absent law and order, you need to be very alert about people's intentions.
These are things that may be good to accumulate over a few years time. This will serve as a sense of security for you and people you care about if law and order exit stage left.
There are things you will need that money cannot buy: stay in decent shape, learn survival skills, learn to think critically and tactically. Go camping or hiking from time to time, just to see how you would fare in the wilderness if you had to."
"get a few of these, its a filtration straw that allows you to drink straight from source water, screws on neatly to a plastic soda bottle, or a camel bak nozzle. can filter about 50 gallons per straw."