I feel that would be handy in all sorts of situations when networks are down.
For most actual emergency scenarios, a device that focuses on storage of large amounts of prepared normal reference material [0] will be wayyyyy cheaper, durable, portable, and able to run without being plugged into an untouched power-plant.
In contrast, imagine building a beefy computer with good GPU/RAM, ruggedizing it, and then mothballing it in a "safe" location for the big earthquake/flood/etc. Then when you need it, how will you power it? If power is 20 miles away on the other side of the mountain, are you going to carry it on your back, or are you going to carry water to live?
But, the current model you really want for an emergency kit is Gemma 4 12B QAT 4-bit. At ~7GB on disk, it's small enough to run on a tablet or any modern computer, slowly if you don't have a GPU or modern Apple silicon, but exceedingly smart for its size, excellent vision capabilities, good tool user, surprisingly good reasoning.