opuntia cacti, also know as prickly pear are apparently psychoactive.

i was simply looking up what type of opuntia makes those yummy fruit and right there on wikipedia it says it contains a range of alkaloids including mescaline. apparently its used as an intoxicant and an alcoholic drink is made from it

mostly tyramine, mescaline is trace.
not particularly psychedelic, but like many plants, it's rich in sugars, thus it can be
fermented.