it's also apparently World Pinhole Photography Day. (main site)
For digital cameras, all is not lost:
http://www.northlight-images.co.uk/article_pages/Canon_1ds_pinhole.html
http://www.pinholeresource.com/shop/shop?page=shop.browse&category_id=13&vmcchk=1
http://www.instructables.com/id/build-a-digital-pin-hole-camera/
http://www.camerahacker.com/EOS_Pin-Hole_Lens/index.shtml
http://photojojo.com/store/awesomeness/slr-pinhole-body-cap/
