Sorry to be off-topic but would appreciate anons' expertise:

Can a sciencefag recommend an affordable personal device or material to reduce electromagnetic radiation on the body at home?

I'm seeing various products that claim to be effective, but none with scientific explanations or proof of test results, such as:

nanosilver fabric, nickel copper fabric, shungite pendants, tourmaline pendants, organite bionized crystals, Schumann resonance generator, "Q-Link SRT" pendant, etc.

Thanks for the help