Every year there is a "Worldwide Pinhole Photography Day" (WPPD). The next one in 2013 will be on Sunday April, the 28th. As they put it on www.pinholeday.org: "Anyone, anywhere in the world, who makes a pinhole photograph on the last Sunday in April, can scan it and upload it to this website where it will become part of the annual Worldwide Pinhole Photography Day celebration's online gallery."
To get inspired again, check out the submissions to the WPPD gallery in 2012: http://www.pinholeday.org/gallery.

I also posted the question "How you are going to celebrate the WPPD this year" in the Pinhole Group on this APUG forum. May I invite you to the group and reply to my question there?
Link to my question in the Pinhole Group on APUG

Thanks,
Bert from Holland