Mushroom spores

spore syringe
Screenshot

Drug it's used for: Spores give way to mushrooms. The right spores will produce hallucinogenic mushrooms.

Effects: Hallucination, mood lift, sensation of insight.

Where people buy it: Specialty shops online can't sell mushrooms since they contain psilocybin, currently a Schedule III prohibited substance, but the spores can be bought from a number of online specialty shops, like Spores 101.

Morning Glory seeds

morning glory seeds
Amazon

Drug it's used for: Morning Glory seeds contain lysergic acid, the same potent psychoactive found in LSD. These seeds can be eaten raw or you can perform an extraction and drink it.

Effects: Mild hallucination, nausea.

Where people buy it: Any store carrying seeds will have these. Just make sure you buy them untreated since many are treated with chemicals that can make you sick. These are readily available on Amazon – 3,000 of them cost just $2.49.

Mimosa hostilis root bark

mimosa root
Etsy

Drug it's used for: DMT.

Effects: Immersive hallucinations, spiritual experiences.

Where people buy it: The legal status of Mimosa hostilis bark is a bit ambiguous right now. Some storefronts aren't willing to sell it, but Botanical Spirit is.

Robitussin

robitussin
Screenshot

Drug it's used for: Robitussin contains DXM, or dextromethorphan. Once extracted from the Robitussin, DXM can be taken in liquid or pill form.

Effects: Euphoria, intense dreamlike experiences, dissociation of mind and body.

Where people buy it: Pretty much anywhere.

San Pedro cactus

san pedro cactus
Wikimedia Commons

Drug it's used for: Mescaline.

Effects: Long used as a shamanic drug, mescaline induces hallucinations and a dreamlike state.

Where people buy it: Amazon, naturally.

Salvia divinorum

salvia
Wikimedia Commons

Drug it's used for: Itself.

Effects: Brief but highly intense visual and auditory hallucinations.

Where people buy it: It grows all over the place naturally, and the seeds are available at garden supply stores. Or you can order it from Salvianoid.

BONUS: Marijuana

drugs weed smoke smoking marijuana
YouTube

Drug it's used for: Itself.

Effects: Relaxation, euphoria.

Where people buy it: You can't buy weed online. The law is just ambiguous enough that you can buy the seeds, however. Try Nirvana Shop.