While I agree with your sentiment, without reading too much into the original post hopefully, I think the unasked question is really more along the lines of: What items could the average urban office worker carry on their person that would be helpful in the case of a local disaster, but at the same time could be carried inconspicuously and comfortably while wearing typical corporate attire?

I also assumed we could exclude from this answer things that your average worker would have anyway, like a cellphone or a wallet.

It just so happens the original poster recalled a post that answered this question with a list comprised of four items, and was searching for that. That said, I don't really find fault with the answer to this question being four items; a flashlight, whistle, multi-tool, and a bandanna/Buff seem to be reasonable to me given the intent.

I guess part of this too is we've jumped in to discussing what the best answer is to a question that no one actually asked