I recently tried snuff. I didn't really need it as I only used it previously in pre-rawpalaeo days to clear my nose of all the mucus caused by dairy-consumption. I just tried it to see if I got any boosting effect from it, but nothing happened. Anyway, it was an interesting experiment and it's over.
Incidentally, I forgot to mention:- one of my occasional dodgy foods is raw, freshly-squeezed fruit-juices; there's no dairy or soy in them, as sometimes is the case, and the fruit is not organic. But it's handy because there are few places in central London where one can straightaway find a rawpalaeoish substitute. I only drink 1 or 2 large glasses every fortnight, naturally.