I build my first "simple" pinhole in 1999.
Since then I have played around with more complex designs.
Pictures 1 through 3 in the gallery were made with very wide angle designs.
Picture 4 was made with my first 360 degrees panoramic pinhole camera equipped with six pinholes in a cylindrical design.
Pictures 5 and 6 were made with a stereo pinhole camera and are presented here for free viewing—meaning in order to view the 3D effect you have to practice crossing your eyes and try to focus in the "third picture" in the middle... it sounds more complex than it is :-) Although it might take some time to get it the first time around...