All you need is some Tin foil (Sn) and some straw (the biological kind).
Pretty much make a cone then line the edges with some straw.
The straw (ground) prevents your head from getting a shock from some of the emf waves that get converted to electricity.
takeheart wrote
That may temporarily save you from death rays, but not from mind control rays https://seek.rockefeller.edu/flipping-a-switch-inside-the-head/