I may disagree with your choice of materials to block telepathic communication. I have found that the light, organic-like or poly-plastic materials
actually ENHANCE the telepathy from higher dimensional beings. If you want to attenuate beings from some distance away, seek out dense masonry or rock
caves. This of course does not work if the being stays near you. If you suspect human technology, highly conductive metals (like aluminum foil) around
your head might be tried. Experiment where nobody can see you. See what makes a difference. Try combinations and note the differences. This may
indicate the technology, distance, or type of being that may be involved. Even stacking buckets of saltwater may may have an effect. If you notice a
difference, it may lead you to more knowledge and solutions. Develop tests to be sure that the thoughts are not artifacts of your own consciousness.
"For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against
the spiritual forces of evil in the heavenly realms."