Something that is pretty unique to this side of the world is a substance known as "Kava." When in New Zealand, some of their guys hyped it up as an alternative to drinking beer. Actually, I never got the time, nor inclination to try it, but researched it a little. Really, it is basically a natural plant from Fiji and works on your head if it is either fresh from the roots or dried into concentrated powder. It is not classified as narcotics, or illegal substance, and seems to have many well documented positive effects on your central nervous system.