Glass, a surface with holes, flashlight and a lot of patiance because on th eimages you see all tiny glitches when it is not perfectly aligned.
Those are photographs and not rendered images. They are slightly refined in Photoshop or just simply exported from Lightroom.
I hope that more images will follow. Those are also not perfect. They have to be fine-processed for a print, adjust symmetry, kill dust and so on. But sometimes you find at this step errors like not wanted shadows or reflections.