Dear all, I hope you are doing well.
I have added 78 Shikishi Art sets to ACO.
There are many different publishers of shikishi sets these days. It is hard to keep up. The Shikishi Art series belongs to Bandai.
Shikishi are flat pieces of carboard. Traditionally, they are used in Japanese calligraphy or brush painting, just a kind of art material like canvas for oil painting. You also sometimes see it as a kind of arty stationary.
For anime, many of the sets have really lovely, unique art. One box usually gets the whole set, so it is easy to collect.
I only have scans for March Comes in Like a Lion: http://animecards.org/doku.php?id=list5:march_comes_in_like_a_lion:shikishi_art_1:scans
But I do have links to all the Bandai pages and most of them have pictures of all the shikishi.
I don't have tags yet so you can search here: http://animecards.org/doku.php?do=search&id=start&q=shikishi+art
Anisa.