Arbitrary Image Stylization in the Browser is an algorithm that will take any two pictures and apply the style of both of them to a third picture.
For an example, I took two posters from the Spanish Civil War that are out of copyright, i.e., Victoria and Izquierda, and I applied those styles to the official picture of President Trump on Wikipedia. The following was the result:
I did something similar with my avatar.
It took a couple of minutes to run on my computer. It helps to close a few tabs. The results were consistently interesting. Recommended.