They have built Google's Deepdream into a VR environment, creating an experience that is "qualitatively similar to psilocybin experiences" -> Paper: A Deep-Dream Virtual Reality Platform for Studying Altered Perceptual Phenomenology
Could look something like the clip from the supermarket below or this music video. The hallucination-like experiences are likely to come about because the visuals hallucinated by the machine are constantly in motion and always mutated in the context of the "normal-sighted world," just as in true Hallus. And then I would like to do the experiences "qualitatively similar to psilocybin" on a Psyllo. In the end, VR is still worth it.