Here is a collection of picture prompts.
Click on the link – find one or find two or three you can combine that inspires an idea in your mind.
https://www.nytimes.com/2021/07/28/learning/140-picture-prompts-to-inspire-student-writing.html
This prompt came from NY Times.
You can also use this gallery as a starting point.
The romance of King Arthur and his knights of the Round Table. Abridged from Malory’s Morte d’Arthur by Alfred W. Pollard. Illustrated by Arthur Rackham. Published 1920 by Macmillan in New York. 
Jewish wedding ring. Chased and enameled gold and filigrees, early 14th century, found at Colmar (Alsace, France) in 1863 
The artist Thomas Cole depicted “The Picnic” prior to 1860. 
https://commons.wikimedia.org/w/index.php?title=User:BANKIM_LET&action=edit&redlink=1
Write a scene inspired by the picture(s)
It can be a poem too.
It can be just description or just dialogue or just exposition in the voice of your protagonist.