Fallout 4 - S.P.E.C.I.A.L. book duplication glitch with Dogmeat
Contraptions Workshop DLC required to build the Conveyor Storage!!!
Max out all of your S.P.E.C.I.A.L. attributes!
This is a well known duplication glitch that applies to items as well, however most videos explaining it do not use Dogmeat, which is imo the easiest way to do it.