Lali riddle cards are very cute, they usually have a "collage" of cute illustrations and a little simple riddle, on the back you can scratch a little square to look for the answer.
I know they exist with the riddles in german and in french (I'm not sure they're printed in another language)
This one is german and says: "Welche Maus mag keinen Käse?" or "Which mouse doesn't like cheese?"
The answer is on right, 3 row (bottom to top) there's a sitting mouse reading a book with a clothes peg on it's nose (:
I really like the football themed stamp as well!