ive heard heaps of these lol,nutmeg is a hallucinagen if its still green, grocery store stuff wont do jack you need your own tree,ive grown some dagga/lions tail and thats a bit like pot but weaker and tastes like shit,people have been smoking that stuff as long as weed as a substitute for weed,ive heard of some stupider ones like peanut skins lol,banana skin pith lol,tea leaves(how stupid would you have to be for that 1? too stupid to be able to roll i bet) if your actually interested in what other things are out there and what others have to say about em look here
http://www.erowid.org/ or here
http://www.lycaeum.org/