Worldwide Pinhole Photography Day is held on the last Sunday of April. This year it was April 29, 2012. You can see my submission here.
This is one of the other pinhole photos I made that day. It is a view of a bucket and flower pot in my backyard. It was taken with my Lensless Camera Mfg. Co. 3 inch Wide Angle 4x5 camera on Kodak Professional T-Max 100 TMX sheet film.