Ive been thinking about nuclear war quite a bit lately, I dont feel anxious but I do like to feel prepared. While I think the main priority should be food and water for the ensuing famine, having a laptop might be beneficial (obviously no internet though).
Ive heard about bombs knocking out telecommunication, but do they also fuck up the personal electronics permamently of people who are far enough away not to be killed by the blasts?
There is a subreddit you might find interesting r/prepperfileshare
Beyond that, you could always just vacuum seal multiple low power SOC computers with portable solar panels, couple of USB hard drives, Blu-ray drives with archival blu-ray discs and then just bury it in an appropriate container. Adequate depth in the dirt can make an effective faraday cage. Store an archive of wikipedia and other useful information. I probably wouldn’t bury any lithium batteries with the solar because they would likely be useless without receiving a charge underground for so long.
Work on getting prepared now so you’re used to living that type of lifestyle before the bombs drop. It makes you more likely to survive unexpected circumstances while you still have civilization around to fall back upon while you’re working out all of the unforeseen kinks. Ask me an questions you might have if you have questions.
Also the other advice in this thread is good too: prepare for the most likely disasters, and focus on strengthening your local community to local disasters.