I remembered learning in physics that electromagnetic radiation has an exceptionally hard time passing through iron bars. Being that the DMT experience seems to be so energetically-bound, I'd be curious to see what would happen if you were to sit in a small iron cage. I don't really know what to expect, and am more than aware that very possibly it may affect nothing other than the fact that I will see bars in front of my face for the duration of the experience. Now, if only I could locate some iron bars...