Quite an interesting idea was implemented by bytelevel . They recreated a world map in the form of ... top-level domains. Each country on the map has its own TLD (Top-level domain). The font size is proportional to the population. The map shows countries from .az to .za, for a total of 245 domains. You can buy such a card, 60 by 90 centimeters in size, on the creators website for $ 30.