It would seem that the decor in many games is purely an aesthetic part of the game, meant to please the eye. In Oxygen Not Included all objects usually have some influence on the environment, which then affects the stress levels of the duplicates. In this tab you will find objects which improve the decor factor. The first available blueprint is the flower vase. It also requires appropriate seeds, e.g. Briar seeds. Interestingly, even without a plant in it, the vase still provides a pretty healthy bonus to the decor. In the case of the death of a duplicate you will want to bury his body – the tasteful memorial serves this very purpose.
A separate group of objects is made out of the following blueprints: the blank canvas and the sculpting block. Placing them is only first step towards making the environment more appealing. This action can be performed by any duplicate. Then there is the painting/sculpting process. Only colonists who can carry out the Art job are up to this task. At this point, the creativity of the given duplicate is the crucial factor. It is worth to choose only the best duplicants, so that others will not lose their time, besides, the higher the creativity attribute, the better the artworks will be. Better art grants a larger bonus to the decor. Place these objects in locations where your people often walk or spend a lot of time in, such as the dining room or the bedroom.