Edit: I saw you added CAD software; I actually think that people would go back to just drawing things on paper before they'd go to "solar rig to PC with CAD software on it". Civilization did run just fine without computers up until they crashed the scene, and most of the really memorable buildings were designed on paper.
EDIT: I just realized, how many people will have blank paper in the apocalypse? How many people print anymore? Man this rabbit hole never ends… For heavens sake though, digital media is so anti-resilient that it’s just crazy…
Maybe keep a couple panels in your underground bunker to bring up to the surface after the blast…
Ammo, instant coffee, antibiotics. Cheap now, can keep for years, light weight and useful to everyone.
Seems like they'd matter more than the electronic number of a non-existent/inaccessible bank account of one's so-called wealth? But I agree that all such instantly barterable items are a better commodity.
A power outage disaster-hardened country has a populace that's deeply knowledgeable about self-governance, organized combat, agriculture, medicine, sanitation, power generation, engineering, textiles, supply logistics, and construction. If the citizens of a western country like the US somehow earned the free time and energy to start regularly studying and executing these skills for themselves and their neighbors, it would be disastrous for the profit margins of most industries. People would necessarily have to spend fewer hours in the workforce (@David Graeber, "Bullshit Jobs") completing nothing worthwhile and more time running a nation-state without money changing hands at every transaction of labor.
I have given up any hope of "power-outage" hardening at a large scale and have resolved to stash my own house with supplies, although I'd be quite vulnerable to raids in the long term.