I've read a bit about herbs and i found this " African Dreamherb " that seem to have some potential.
Description of it: ( Translated from swedish )

This herb has been used in decades in africa to give amazing dreams, Diligented used by Shamans.

The herb is in a nutshell, you make a hole in it, and smoke the inside of the nutt, where you also can place other sorts of herbs ( Dreamherbs) and this you do before you go to bed, to get some really wicked dreams.

I wonder, has anyone here had any experience from these kind of methods?