Imagine you had 72 hours before everything collapses. How would you spend that time? Would you stockpile supplies? Would you focus on warning as many people as possible? Would you try to preserve knowledge, like books, hard drives, download internet archives, etc.? Would you collect music or history?
Really, it’s a question that’s too sad for me to answer: I don’t know. I’d probably panic, like anyone would. Also, it depends whether there is anything after the apocalypse. If the world is ending and explodes, I am not in a position to preserve things anymore. (I probably wouldn’t be if it didn’t, either.) If it’s just a setback in civilization, and I have a chance of survival, maybe a few of my favorite media on various types of storage. Ideally, maybe hints to check Svalbard once civilization has been rebuilt. (The World Seed Archive and Arctic Code Vault are there.) But, if we want to joke about it: I’ll check if anyone’s live from Harmageddon.