Sitting by the fire has always helped me enter trance states. What many seem to miss about the Buddhas teachings is that he realized (all is one) and all the external projections, dmt, entities whatever is all a projection of our consciousness. As paradoxically as it sounds, the entire universe is within you, your inner-verse is creating it and the visuals and things you see and experience are you tapping into your infinitude of the universal mind.

You will find as your mind becomes more and more still via meditation and other practices, you will hallucinate less and see less things and tend to "feel" more and "understand" more.

My idea is that hallucinations are a result of a busy mind, i find when i am deeper into trips I have no thoughts/no hallucinations, the realities merge into one or when I am living in the forest and meditating a lot, i take mushrooms, I don't trip at all, because I have become so relaxed, and calm in mind/body/spirit, if feels no different to my natural state.

Whereas if i go into the city and get lost in all the mess then I take a psyche, I notice more hallucinating and altered states of perceptions because my mind and body has become much more "stimulated" and "active" thus the beautiful mess of hallucinations.