This may or may not be a shamelessly self-interested question, since I will soon be in an connection-free environment until June for work. That said, I think it's an interesting thought exercise. What tools/materials would you download in advance? What projects would you work on to stay productive? Curious to see what ideas HNers come up with.
https://othernet.is/products/dreamcatcher-v3-05
Some history etc. of what OtherNet is:
https://en.wikipedia.org/wiki/Othernet