I would leave a flower and some sweetgrass
Weengush, or Sweet grass is used to cleanse the mind, body and spirit. It is considered sacred because it is symbolic of purification. It represents the Northern direction and the body. The elders tell us that scent of these natural herbs is pleasing to the creator and will incline him to hear the ceremony with favor. The smoke is considered distasteful to all evil beings and thwarts their powers. This plant plays an important part in ceremonies of spiritual significance. When Weengush is used in ceremony, each person is to fan the sweet grass smoke, first to their heart, second to their mind, third around their body and lastly, return the smoke to their heart. The prayer said during this process is: "Great Mystery, please cleanse me of my negativity and fill me with the positive energies of love, so that, as I am healed so may I work for the healing of our Earth Mother."