Don't aim for 240V AC washing machines. Aim for 12V DC. LED lights, phone batteries (recharged for data storage), and small water pumps. Civilization needs light for education at night.
: Perhaps the most important "invention," the scientific method allows survivors to re-discover and refine technologies that were not explicitly preserved. Social and Ethical Structures The Ultimate Guide To Rebuilding Civilization
Several comprehensive manuals serve as blueprints for this process: The Knowledge Don't aim for 240V AC washing machines
If you can only save five books, save these: phone batteries (recharged for data storage)
Timeline: 6 Months – 5 Years