In my book, I made it a little cute creature-critter thing. They didn't know what it was and that it was small until the next day. Well, they still don't know WHAT it is... Orphan slept in Itachi's room, and Tobi slept in Zetsu's. The creature belongs to Hidan and his name is Jashin because the fur on his chest looks like Jashin's symbol.
The text here is large and in a font that makes it easy to read, as well as having complimentary colours to add visual appeal. I do wonder how this font will be able to fit a postcard size with the amount of information that needs to be displayed.