A decorative initial “S” taken from a late 15th century alphabet. You could use it as a drop capital, an avatar, or something to colour in. If you use it, let me know what you did!
SVG <a href="//commons.wikimedia.org/wiki/User:Perhelion" title="User:Perhelion">Perhelion</a> (Original unknown)
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>; Shaw, Henry: “Alphabets &amp; Numbers of the Middle Ages” (1845) FROM THE GOLDEN BIBLE, printed at Augsburg<a rel="nofollow" class="external autonumber" href="https://www.fromoldbooks.org/Shaw-Alphabets/">[1]</a> <a rel="nofollow" class="external free" href="https://archive.org/details/handbookofmediae00shawrich">https://archive.org/details/handbookofmediae00shawrich</a>