What will you find in the woods today? Going directly for that goth art angle. Crows, forever doomed to be associated with followers of the (Andrew) Eldritch.
Original photo from somewhere up in The Chiltern Hills, probably Crowsley Park.
Postcards are A6, matt printed card with a space on the reverse to write a lovely message, draw a picture of your own or scribble down random thoughts about the apocalypse.