What are some of the most unique drugs out there with the weirdest effects? Your experience?

I’ve always been interested in how different drugs effect the mind and body and recently I’ve been researching niche drugs that provide some extremely unique effects. One of the most unique ones I came across was DiPT which gives users intense auditory hallucinations. Some others like salvia and datura, obviously due to their unique hallucinations. What are some other unique drugs out there that produce experiences like no other? What was your experience with it if you have tried it?