Sacred Symbols

Sacred Symbols of Sekhmet or Sekhmet-Mut

Sacred Animals
Lioness and Lions
Leopard (as an Eye of Ra)
Cobra
Snake
Cow (for Mut as Celestial Cow)

Crowns
Solar disk with uraeus serpent
Double Crown (Red and White Crown of Two Lands) (especially as Sekhmet-Mut)

Regalia
papyrus sceptre
ankh
scimitar

Natural Forces
Sun
Solar Rays
Desert
Desert Wind (said to be Her breath)
Isheru Lake
Plants (for herbs as a healing Goddess)

Sources

Kant, Candace C. and Anne Key. Heart of the Sun: An Anthology of Exaltation of Sekhmet. iUniverse, 2011.

Krasskova, Galina, ed. When the Lion Roars: A Devotional to the Egyptian Goddess Sekhmet. Asphodel Press, 2011.

Lesko, Barbara. The Great Goddesses of Egypt. Oklahoma: University of Oklahoma Press, 1999.

Pinch, Geraldine. Egyptian Mythology: A Guide to the Gods, Goddesses and Traditions of Ancient Egypt. New York: Oxford University Press, 2004.