The recipe for making soap
A general practitioner’s medical book
A dummies guide to Latin
A compass
Water bottle with filter
A taser
Instructions on how to make a battery
Instructions on how to make gun powder
The rise and fall of the Roman Empire books
IIRC there are these really durable laptops with solar pannels built into the lid that are made specifically to bring internet to people in third world countries. They're naturally rather underpowered but you could still put a high capacity SSD in one and it'd be less likely to break than a smartphone.