[dredmorbius]

The items which would be useful for an emergency situation are largely readily available commercially, and/or depend on both local and personal circumstances. There are guidelines for packing a go-bag or bug-out bag, e.g.,

<https://www.state.gov/global-community-liaison-office/crisis...>

<https://www.outsideonline.com/outdoor-gear/how-to-build-the-...>

Many of the specific supplies that are useful are dual-purpose, and may include preserved or shelf-stable food, camping, recreational, or work-out supplies.

The most critical needs are usually fairly brief, the day or two before rescuers can reach people, or during which evacuations are ongoing. Those in more remote regions may want to keep longer-term stores, perhaps a few weeks worth of supplies, but will likely have much of this on hand already.

Keep in mind that a go-bag is to go, and if it weighs much over 25 kilos / 50 lb or so, becomes a challenge to movement itself.