I'm not likely to go anywhere either, unless absolutely necessary. This thread could go on forever. LOL! There's just so many things to consider that it gets overwhelming at times. I just try to think of the things we use on a daily, then weekly, then monthly, then seasonal basis and try to cover it all from there. For example, what do we use every day? Toothpaste, toothbrushes, TP, coffee, water, clothes, shoes, hand soap, electricity, shampoo, razors, etc. I mentally go through a typical day and make sure I'm stocked of anything getting me through day 1. I try to keep plenty of those things on hand since I use them every day. Then I move on to other family members including the critters as far as what they need daily. Then I move on to the things we all require on a weekly basis and on and on and on. Hit the basics such as food, water, shelter, heat, safety, hygiene, etc. and then move on from there to other needs or comforts.
I'd love to take some of the folks on this board with me who know lots about herbs/plants/etc. for providing your own medicine. I have just dabbled in making tinctures and I have much much more to learn, but I have a nice stock of 100% vodka for tincture making. I have lots of books to back me up, but I really need more first hand knowledge on what plants are in my back yard and how to utilize them. In the meantime, I have a supply of OTC meds, fish antibiotics, collodial silver, etc. to rely on for common ailments. Plus, I'm not a vodka drinker, but hey.....I'm sure some of those days may require a cocktail and vodka beats nothing. However, that vodka can be used for many things.
If you have a well on that property, maybe consider getting a manual backup system in which to get water. I finally bought one a while ago. I've never had it out of the box and if all goes well, I probably never will. However, I do feel better knowing it's there should I ever need it. I don't like purchasing something I doubt I will ever use, but considering how important fresh and clean water is, I thought it was worth it for the peace of mind it gives me.
Maybe consider planting some fruit trees or berry bushes this spring as well as stocking up on some good seeds and gardening supplies. If you think you'd hunker down, it'd be nice to have a grocery store in your back yard. Perhaps a nice supply of jars and lids as well as a canner and canning salts/sugars would also be a good idea. I'd also get a ball canning book or something similar to help guide you along the canning process if you're not familiar with it. I store my canning book in my canner. As a nice bonus, good clean food from your backyard will be more healthy than anything else you can ingest......so even if you just use it for that reason, it'd be a nice bonus.
Books! I just love books of all kinds. I even like books on subjects that I am proficient in b/c even if I know a subject well, others may not, and would likely find my library an asset. I especially like the books of things I need to learn. Typically I just skim them when I get them and then put them on the shelf. Someday I may be relying on them for valuable information......or maybe just to keep myself entertained. I have a book addiction and have loved them since I was a kid, so perhaps you don't need as many books as I have, but I would suggest getting them on subjects you wish you knew more about, even though you may not have the time to read it right now. I have found many of mine at garage sales and secondhand stores for pennies on the dollar. Buying them off Amazon can get pricey. Our local library has monthly book sales as well (to get rid of underutilized inventory) and those book prices are usually pretty good too.
