I also extracted dimethyltryptamine using various solvents in Acid to Base extraction since we have DMT in such abundance in plants over here everywhere. I never got around to using it, I wanted to try it as a colour developer since it has no hydroxyls, this was the time I was fiddling around with rodial, parodinal and phenidone on colour film and seeing some weak colour results.
Although if you go down that route you might have your local feds knocking on your door since I hear they're pretty uptight there as opposed to over here you can do basically whatever you want that's nout endangering others or dodging tax or dealing black market substances.
http://en.wikipedia.org/wiki/Dimethyltryptamine
The same with psilocyn in magic mushrooms.. in fact many poisons and psychoactive substances look like they'd appear to be developers of some kind. Mushrooms are easy to start cultures for and grow too.
However there is a compound in many mushrooms that's not a poison or psyoactive drug, and not a controlled substance, and is common in some food and vege shop mushrooms which I was looking at... I need to remember the name of the compound.. this would be a good idea.
The other thing that may be worth looking into is mushroom derived dyes.