The easiest way to add green to a project, is by adding a house plant, and every opportunity that I get to use one, I do.
My favorite house plant is the fiddle leaf fig, and I have learned they are best left alone. I have personally owned two and the less I do with them, the better they Thrive.
I have been told that fiddle leaf figs need a good source of natural light, and I have had to move mine around to find the best placements. I've also been told to water once a week. I am known to have skipped a week or two. And right now, my plant looks the best it has since I brought it home.