There will be so much stuff left over from our civilization that it should be pretty easy to scrounge and scrape together stuff, Mad Max-style. Access to a land

There will be so much stuff left over from our civilization that it should be pretty easy to scrounge and scrape together stuff, Mad Max-style. Access to a landfill, steel, copper, other metals and some working electric motors/generators, and you're off and running. Heck, to make a generator all you need is a permanent magnet, some copper wire, and some mechanical energy, like maybe hydro or a bike crank.