A printer from the Ladies of Letterpress forum has proposed a postcard swap for the summer with the idea of each lady involved printing a postcard of where they are from. Details are here: http://ladiesofletterpress.ning.com/forum/topics/letterpress-swap?
I particiapated in a swap of Old Maid cards with members of this group last summer and it was a lot of fun. Not to mention that I love postcards, writing about where I am from, and where I was all summer.