Salvia..bath salts,huffing gas(nitrous),..any research chem falls under this criteria I might imagine,auhausca(sic),(does that qualify as dmt?)licking toads,reciting mantras,sleep deprivation,meditation,alcohol,dxm,..I head a story where my friend would take rye bread,hollow the pulp outta half and orange,stuff the orange with the rye bread,(he was in the navy),then wrap the mixture in aluminum foil,and toss it on the roof of a ship for a few days,unwrapp it and eat the mold and trip balls....I don't know if this is factual,I was 10 when I heard this he was 20 something..options are out there...