Copied from Neil Gaiman’s blog, because this is insanely cool if you like stamps, mythology, or Gaiman:
I mentioned here before that Dave McKean painted some Royal Mail stamps based around the myths of the British Isles. They look like this:
(The last one, of a Mab-like fairy, was originally going to be a banshee, but then someone realised that the first time someone got a letter telling them bad news, in an envelope with a banshee stamp on it, it would be seen as a Stamp of Ill-Omen.)
The Royal Mail have just put the stamps (and the presentation pack, and the First Day Covers) on sale for pre-orders. Wherever you are in the world, you can order it from them directly: Lots of lovely Dave McKean art, some of it much bigger than stamp size.
This is the link to the presentation pack.
This is the link to the whole Mythical Creatures area of the website.
And on Twitter I learned that the Royal Mail solution, if anyone asks, is to enter US phone # as follows: 01 0 617 1234567. (I assume that the 01 would be whatever your local country code would be if you are not in the US.)
Out of Eden 
i like the unicorn stamp