finding myself without any thin balsa (my preferred answer) I decided to
try slicing blueboard very thinly as a substitute, it seems to have worked
I then scored it with a ball point pen to simulate planks
then I made a couple of yards of 2mm wide paper strips to act as hinge straps and door handles
careful bending over the edge of an X-acto blade and you have a door handle
some carefully applied glue....
and POW!, your doors look really cool
(repeat twenty-four more times)
I hate to say it, but window gratings are next.