I went through a phase in 2014-2015 when it seemed faces and figures were appearing to me in close-up photos of fabrics, plastic and tin foil.
At first I thought maybe I was seeing things from a spiritual dimension, or parallel universe. Or ghosts or little people. Or Hell! But I think all it takes is for a person to be:
(1) Imaginative, and have the ability and willingness to imagine
(2) Perceptive, and not suppress one's perceptions
I will keep posting some of these from time to time! Look through my 100+ posts on STEEMIT, you'll see many more oddities like this!