May I suggest that some, if not all, that are reading this thread, take the time to look at this informative webpage:
EMERGENCY DRINKING WATER SUPPLIES
If nothing else , at least reading the following sections:
How should I treat the water for storage? ,
Hidden Water Sources in Your Home, & the
Summary at the end/bottom of the page.
Even if you choose not to do any preparation in regard to food stuffs, it would at least be a good idea to be able to help those that you care about, even if you do not include yourself, in some basic preparations for times that are tough. By knowing how to at least have a drink of potable/safe drinking water.
I might mention that just having a 5 gallon bucket with lid such as the type used by restaurants( food grade) with some tins of Spam/potted meats, sardines, tuna in it. ( a min of 10) Include a teaspoon, & a means of opening the tins(manual can opener/et al), if they are not the "pull open type".
You have now just made a "minimalist type preparation kit". & it does not take up a lot of space. Also it is portable if you have to move to another location. If there is a possible time where you feel that you may be wthout food & water for 5-10 days. The items in your kit will last you for that time & keep you alive for at least 5-10 days in regard to food & water. All you need to do is fill the bucket with potable/safe drinking water right away before it is needed, & there is now about 5-10 days worth of water to keep one person alive, depending on their needs( hot climate/work load/etc). Keeping a lid on the bucket will help reduce evaporation. The food stuffs, although not a lot, should at least provide you with a means of keeping away "hunger pangs" & the weakness that lack of food can create. The teaspoon is for eating the food in this minimal kit, & the openers use was already mentioned above.
Now if you add the following( & they will fit inside this bucket kit):
(1)small(12 0z/.354 liter) soda pop/water bottle & /or a 8 oz/.237 liter measuring cup. Along with a small quart/.95 liter sized, (or equivalent) bottle of bleach, that contains no soap or scented additives.
The small bottle can be used as a drinking device,canteen, & a measuring system. The cup can do the same without the canteen use. The bleach is to be used to help purify any water you feel the need to purify.
Using the teaspoon & the appropriate amount of bleach, you can purify water found in other locations, such as the hidden ones mentioned in the link. The amounts of bleach to use are there also & would be worth writing down on the side of the bucket for reference.
The bottle or cup can be used to transfer the new water into your bucket & measure how much bleach you need to purify the particular amount of water you gathered. The bleach then becomes self -explanatory as the purifying agent.
I could add more right now , but this short list may help satisfy some who wish to possibly prepare, minimally, for situations that occur unexpectedly regarding food/water shortages.
If you take the time to "prepare" your food( cleaning/cooking/etc.); "preparing"to go to work(dressing appropriately, having subway or bus tokens, cab fare, etc), To relieve yourself( having toilet paper); I could go on & on, since people "prepare" all the time, in many ways, if ya think on it.
Why not prepare for unforeseen circumstances that you , in a small /inexpensive way, can "prepare" for ???
Although I repeat myself...., if you don't want to prepare for yourself, it would be the responsible thing to do to at least "prepare", for those that you love/wish to help.( or help them to prepare).
I hope this is of some help to others.
Respects,
JB/MnSportsman