I got carried away...
Bored by the snowflake, I decided to make something slightly more challenging; a flower! It still fits in the given dimensions for the project, and should stand very well on its on.
I am realized sketching isn't my strength for communication of ideas, because none of my initial ideas make it. The snowflake I liked, because it seemed to fit with other game piece type items; has relatively little complicated detail (perfect for the injection molding required to produce millions of little monopoly pieces). The crown on the pillow was going to be too stout for the dimension requirements... But once I was modeling, I got inspired. So these are my sketches: