With no limitation of the Camera Obscura technique each object can become a camera. The form / shape of the object (later pinhole camera) can influence the final result .
A bottle of whisky sold normally (in the “duty free”) in a long carton or metal can - This object can be use as a 3 pinhole camera because it is very narrow and long. This shape give an amazing effect - 3 images which dissolved one in the other. All images here was made with “Whisky cameras”.