I’ve been wondering when something like this would be publicized and available for sale.
If I had the time and didn’t mind missing my flight I would make myself a set of clothes that were lined with, or made of, aluminized Mylar. I pretty sure it would be hot and uncomfortable but it would also totally block the latest TSA body scanners.
If I had enough money that I didn’t have to work anymore I think I could entertain myself for years making (bigger) fools of the TSA on a weekly basis. Of course some of my jollies might bring commercial aviation to halt for a day or two and then I would feel bad for the hardship I had imposed on all the innocent people trying to travel.