Thank-you, Jhanon for the recent link to a video on grounding in support of my findings; however, they have not figured out that shielding is critical as well. And, now your question regarding using an electric blanket as an aide to grounding and shielding.
Originally, 40 years or so ago, I was aware of the hypothesis that EMF might pose a health hazard, so at that time I had rejected offers of electric blankets. They only work plugged in anyway, and I was living mostly out of a back pack in those days.
However, I had not considered your rather brilliant idea of using an electric blanket for shielding and grounding. It would work quite well for shielding.
You are correct, if you bought a 3 prong male and female power socket and plug pair at the hardware store, then with some scrap wire, or purchase a foot of 16AWG solid wire at the hardware store, and wire all of the contacts on the female socket together, then run just one wire from the grounding pin (the round middle pin) on the female socket to the grounding pin (the round middle pin) on the male plug, then plug the male plug of your electric blanket into the female socket of the adapter that you just made, then plug the male plug of your adapter into the wall socket, then put the electric blanket over your bed, and you now have a reasonably good EMF shield.
You still would not have a ground without having something conductive in physical contact with your body that goes to earth. A grounding strap could be wired to the grounding pin (the round middle pin) on another male plug, which is only wired to the grounding pin, then plug that grounding strap adapter into another grounded outlet, and wear the grounding strap at night when you rest under your electric blanket, which has been converted to an EMF shield.
You still will not know whether you are shielded and grounded unless you also purchase a power socket tester at the hardware store. These testers are quite cheap and easy to use. You just plug the tester into the wall socket that you are planning on using for shielding and grounding. The tester will have three lights that light up to tell you how your socket is wired. There will be a code printed in the side of the tester that will tell you if your wall socket is grounded.
By the way, making and selling shielding and grounding equipment for health is one way that a contemplative community could sustain itself ethically.
Since this is the space weather thread, I had to suspend my daily reports, after moving because the WIFI at the new location was next to useless. It took me about 2 weeks of getting the management here comfortable with me to let me have access to their wiring closet. I then did some simple EMF trouble shooting in there, and now I have good WIFI that I can use in the comfort of my van, which is about 100feet from the wiring closet, while drinking my hot morning drink.
In the interim we had 2 significant space weather events in the last week or so that produced estimated planetary K indexes of 6. Space weather has returned to relative calm.
