It is hard to understand stamp collecting. Collecting old letters, yes, but stamp collecting, well, to many of us it's simply the local pastime of the citizens of Boringsville - postcode z-z-z-z. But what does look fun is this illustrated stamp set by Gary Hunt.

Created in collaboration with Royal Mail, Hunt's new postage stamps aim to kick-start a envelope-defacing dialogue between you and your friends. A game of exquisite corpse played over long distance might just be the motivation you need to finally get to the post office, and even if your friends aren't worth a humorous envelope, perhaps the tax man might like to look at a mail doodle? A drawing, that is.