Tool set
As an aircraft mechanic for 30 years I have learned there is only one set of tools to get that is Snap-on
nothing makes a job go smoother than a good set of high quality tools.
the cost of the tools is high
the cost of busted knuckles can also be high.
Actually
Actually not really far fetched
A pebble reactor which would be about the size of a Genset would last 100 years or more and produce enough heat and power to run pretty much anything.
they are simple and pretty much fool proof.