Foraging, fishing, invincibility, monster repellent are the other effects. I could see how any particularly pungent strains could have the monster repellent effect, but I know nothing about marijuana beyond it's chemical properties. If there were any wild strains, they could give a foraging buff; ones that would grow in water rich areas could give a fishing buff (or hydroponically grown ones? Can that be done? Both IRL and in game.) Any strain that is particularly strong in pain dampening properties could give both a defense and speed buff, maybe, followed by a speed debuff. Idea being that the inability to feel pain makes your character run harder than they normally would because they can't sense the pain, but once it wears off the muscle wear kicks in. Also, just a a few comedic ideas: when the Farmer is under the influence, the screen could have a fuzzy effect from being 'high.' And the munchies could be represented by a stamina hit.