Mixing the raw files of two images together.
I used Photoshop, with Google's Nik Collection plug in, specifically, it's HDR merge function.
I selected two otherwise unrelated images, adjusted the settings, and this is what you get.
Some images came out at different sizes the went in, this was usually because one was landsacpe and one was portrait (an theuse somre cropped it automatically), bu also because some were raw files from my Sony RX100, and some were from my Canon 650D, and I think the software had a bit of a tantrum at this.
Some of the output though is quite interesting.