Suggest me some psychedelic fiction

I'll leave the interpretation of this request fairly open-ended, because I don't necessarily have a better descriptor in mind than "psychedelic". Trippy, fun, whimsical, confusing, unsettling, any combination of the aforementioned and/or more, it's all on the table. Drug use is a fairly consistent theme, but it's also not required as long as the vibes are right.

Please do not recommend Fear and Loathing in Las Vegas. I only say that because I already own it and it's already on the TBR. I'm looking for more!

A few examples of books that I've read and enjoyed which fit this description for me:

• Vurt by Jeff Noon
• Inherent Vice by Thomas Pynchon
• Rabbits by Terry Miles

I haven't read any Phillip K. Dick, and I believe he might be a good fit here. So if you agree with that, hit me with some of your favorites!