RPGs are the most interesting kind of game to me because of the characters. If you become a writer, you'll quickly realize there's no such thing as an original plot. No matter how clever you think your idea is, it's always a variation of something else, and it can be boiled down to nothing but a handful of tropes. For me, what sets a story apart is the feelings and opinions of the characters who experience it.
You can define the word "herb" either loosely or narrowly, but you very likely have them lying around your home in some form ^_^ You might have aloe vera for burns in the medicine cabinet somewhere, and the spice rack in your kitchen should have plenty. Rosemary, thyme, basil, sage, garlic, ginger, cinnamon, cloves, fennel, and saffron all have medicinal properties, just to name a few (there are many others). Herbs have become increasingly popular in over-the-counter treatments as well, especially in things like sleep aids. If you have any of those lying around, you will no doubt see herbs like valerian, lavender, St. John's wort, chamomile, lemon balm, evening primrose, skullcap, hops, etc. on the ingredients' list.
*high-five*
Can't agree with this more.