scudge your suggesting turning a item that causes sensory deprivation into a religious artifact.
idolatry is dangerous on the best of days, i really suggest you dont do it.
as for the question about blocking out "frequencies" it cant be completely done a faraday cage (which is basically a grounded metal net) will disrupt just about anything, but that doesnt mean it blocks it, merely that it scrambles the reception.
the best thing you can do to block out every thing your human senses can pick up is a blacked out hyperbaric deprivation chamber (a hyperbaric chamber with a salt pool in it with the lights off) although that wont address smell deprivation. the thing is that pressurizing them takes a long time and for most people 15 minutes in a regular deprivation chamber is more than enough.
but there is nothing you can just stick on a persons head that will do everything. for now i suggest finding a ping pong ball cutting it in half, taping them over your eyes and get the white noise from a radio browning out the background sounds. i know how it sounds but try it, you still will be having stimulation from those little bones in your ears anbd from your sense of touch, but a few minutes with those ping pong balls and your brain starts stimulating itself, very fascinating.
good luck