08-18-2015, 11:55 AM
Maybe just have an item that you can add to plants? Let's call it an Oxygen Gel Brick. You add it to plants like you would compost or other fertilizers and then the plant would start emitting oxygen. This could work with any plant, instead of just special kinds. You could refill the O2 in areas with banana trees, explosive tomato plants, weed, or even maneaters!