If you have a premium Shodan[0] account, they have an ‘Images’ view which is filtered VNC and other Remote Desktop screenshots and links to view them directly with the IP. Lots of security cameras, some SCADA industrial access control screens, and lately seemingly people who I guess are hacking vulnerable Windows boxes and changing the wallpapers to anti Israel stuff.
I'm actually kind of surprised that most of these images are just advertising and shock imagery. I never expected adverts to be done through shodan, though I guess it makes sense.
[0]: https://shodan.io