The best plants for natural tranquility and energy flow or Ch'i are those which are natural and native to the area. While plants which are tropical may look lovely during the summers of climate zones 5 and 6, they are really not suitable just as northern plants which require a frost are not suitable for zone 1 or 2 and can create numerous ecological problems. One popular plant which is seen in every climate and adapts to every growing condition is bamboo.
Because of its robust nature, it survives cold and dark but needs a lot of water to thrive. This is a plant which can potentially be invasive so use it accordingly. The Chinese have historically considered bamboo to represent tranquility and would include a bamboo leaf in their correspondence with family and friends, in order to represent and wish for wellness.
I think Lucky Bamboo maybe a good choice. According to Feng Shui, the number and type of lucky bamboo can determine what kind of luck you want to bring into your life.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.