Every year I send out a story in my Christmas cards, and every year I put the previous year's online. The past ones are all archived on this blog, but 2013's was a touch experimental, being 720 words of prose supplied on seven cards that could be rearranged in different combinations to create 720 different narratives.
That isn't something I can really present via Blogger, but the indispensable Dale Smith has kindly translated it into PHP so I can publish it on my website.
I give you my 2013 Christmas 'story', 'Tableaux'.
2014's story is more linear, and is a direct tie-in with the Devices trilogy, taking place between The Pendragon Protocol and the second book. I'm not sure quite what's going to happen with that one -- it may appear as an extra in the books at some point. (I'll tell you, though, that it's called "Mummers and Poppers: A Devices Story for Christmas".)
A very pleasing festive season to you all.
 Note for the mathematically competent: Yes, I know. One of them always comes first.