I need to replace some worn 2-wire electrical outlets in my parents’ house which was built in Southern California in the early 1960s. The house was built using 2-wire Romex (no ground) and plastic boxes. It seems everything these days requires grounded receptacles, and while the adapters that attach to the coverplate screw allow one to plug a grounded plug into a two-wire receptacle, the ground lug ends up floating. Worse yet, such an installation gives one a false sense of security.
In this sort of situation, what’s the best way to proceed? Since the neutral is grounded at the box, I’m tempted to simply connect the ground lug on the new plugs to the neutral and call it good, but I know that’s not Kosher. Short of rewiring, what’s the right way to do this?