You're thinking too small. Why not have a conductive blanket. http://www.lessemf.com/bedding.html http://www.lessemf.com/bedding.html Or just paint your walls

You're thinking too small. Why not have a conductive blanket. http://www.lessemf.com/bedding.html http://www.lessemf.com/bedding.html Or just paint your walls and make your home a Faraday's cage? http://www.lessemf.com/paint.html http://www.lessemf.com/paint.html