We are planning on living here for the rest of our lives. We will probably have most everything rewired during the renovation. First floor will be easy as outlets are in base boards and easy access from the basement.
Anyway, here is what I've done so far, probably ineffective but the best I could do. I bought some 2-to-3 prong adapters. For my computer I ran 14 ga wound copper from the ground on the plug adapter to a large cold water copper supply pipe. For the tiny window unit upstairs I ran the same type of wire out the window to a metal stake in the ground. Not sure if I've accomplished anything but that's the extent of what I've done.
When I was in college I lived in this house with my grandmother during summer break. I remember having my stereo receiver, turntable and tape deck running off an extension cord from a light socket plug adapter.