I think that psychedelics benefit from group experiences and that the answers one extracts from them, even if a myth of the brain, are beneficial, but not something the average user of an alt imageboard an imageboard that is not 4chan would find desirable in most instances. Much in the way classical music affects the brain in a way that makes one less violent/prone to crime and calms their overall demeanor for several minutes after it's finished, psychedelics (at least the ones I may or may not have used) similarly cause alterations to your brain in what at the time seem like natural ways until some White-hair-inducing event breaks you out of that cycle and causes you to realize/remember that the alterations to your mind weren't natural (in effect dispelling them) in a way that could be worse but ultimately helps you better understand your own character. At least of the ones I've possibly dabbled with, I would say that anon would likely have a bad trip and not enjoy the experience at all unless anon also happened to be using them for religious reasons or as an avid history buff trying to put himself into the shoes of his ancestors.
That being said, if anon were interested regardless of this fact, a very mild one that is legal to obtain in 48 states is Soma, a tea brewed from Fly Amanita/Fly Agaric mushrooms. This isn't a banned psychedelic because it's mostly only used religiously or with intent to have some questions answered, or to discover something about yourself when ingested intentionally. If your brain just doesn't work quite right with it, you'll just get a stomachache for a bit and then feel drunk. If your brain does agree with it though, you'll get everything from simple grain-film/motion blur and shadow people all the way up to shit you can see and feel (or at least in my possible case). Just make sure you get the right kind. The young shrooms are more potent but can be mixed up with other poisonous mushrooms that will actually kill you. The older shrooms are a little less potent, but then you can clearly tell what they are. Only get the red ones. The orange ones I think might be ok but the yellow ones I'm pretty sure are actually deadly due to a different chemical in them. Amanitas are largely harmless unless you do something stupid. 1-3 mushrooms is a good dose, 5 is sort of an upper limit before the negative effects and positive effects are equalized, and past 7-8 is gonna make you very sick and hopefully very sleepy, because you may die on the floor of hypothermia as your core temperature drops or you unconsciously freeze outside due to how the ibotenic acid is currently fucking with your brain/trying to kill you. They can be eaten raw, dried, steeped, or pan-fried in butter. Do not deep fry them unless you plan to throw the pan and oil in the trash. If you boil them in a very large vat of water, dump the water out halfway through, and boil the rest of the way, you can then safely eat the mushrooms without any psychedelic effects. It was used by the Norse, the Slavs, and the Indians (and likely everyone inbetween) back in ancient times. Its actual ingredients and how it's prepared are a matter of myth, but the drink itself was considered very much real and was considered the wine of the gods sometimes across ethno-religious lines. The precise recipe can never be found, but Fly Amanita is a confirmed ingredient. I've made two forms of Anon Anonson brand Soma that will be referred to as Soma A and Soma B.
A warning before making your own Soma: Carbon Dioxide bubbles interact with Amanitas to convert more muscimol into ibotenic acid, so never mix it with soda, beer, or bubbly drinks. Similarly, Amanitas will contain ibotenic acid either way just in different amounts. Do not consume amanita tea more than like once a month (or once every three months if using large doses), as ibotenic acid does cause brain lesions. This is mild and repairable at occasional uses, but common use is not a good idea.