I smoke a lot of marijuana but I never hallucinated - Sometimes I fell like Im levitating If Im laying in my bed.I dont see spirals or geometric forms...
On LSD I see some people changing form or shape and the kaleidoscopes everywhere,...And the colours are more vivid. If I close my eyes the kaleidoscopes and fractals are more intense and sometimes fluorescent. I trip more with my eyes closed even when the light Is strong.
On peyote and san Pedro I didnt see the fractals and geometric forms but everything was fluid and soft - like Im inside an living organism that moves with me and around me. It was more the psychological feeling than visual.