Sketchbook: The Ankh
One of the most recognizable symbols from ancient Egypt and known as "the key of life", the Ankh dates from the Early Dynastic Period (c. 3150 - 2613 BCE) and is simply a cross with a loop at the top sometimes ornamented with symbols or other decorative flourishes. The symbol is an Egyptian hieroglyph for "life" or "breath of life" and, as the Egyptians believed that one's earthly journey was only part of an eternal life, the ankh symbolizes both mortal existence and the afterlife.
A quick practice piece I did just to see if I could get all the lines symmetrical. First attempt.