Well, but I wonder if there are possibilities of making things "special" aside the shee art content. I mean, zazzle, redbubble and whatnot are simply print (your logo) on demand services with a standard palette of items where you can print upon (cups, T-shirts, breadboxes, cushion sleeves and calendars). But I guess at least in that area isn't too much room for custom styles and decoration.
Well, and I doubt people would buy 12+1 cups with different calendar art for their cupboards.
Besides, the artwork would come out rather small on cups.
Of course, one could celebrate, somehow. Though we also might wait for a multiple of 8 yers for this to happen (EQ elves at least seem to count in eights).
A double feature calendar (24+1) would require a lot of contributions, that's a bit insecure to plan in advance.
Umm, I guess I am lacking creativity when it comes to other ideas of making it "special".
I guess we have most influence in terms of art/topic contents, for the material item is limited by the printing services palette of offers.