Not only is the fresh air liberating (even in sub-zero temperatures) it saves anywhere from 1.6 to 3.5 gallons per “episode,” depending on how chic and state-of-the-art your toilet is. Plus, humans and other land mammals convert the excess nitrogen they excrete when peeing into ammonia, then urea, which, in small doses is quite healthy for plants, as urea is a fertilizer farmers commonly put on crops as a nitrogen source. Just remember to act in accordance with your local indecency laws (image not necessarily reflective).

Thanks to Winston Ross for submitting this tip.