I don't think this would be easy to do, but I just had a thought that it would be cool if someone was able to get some software to look at coins around the world and graph them by size and weight or size and metal composition on an x/y graph, and then even cooler if they animated it and did it over time . I've always had a fascination for how coins around the world have similar sizes and shapes, and thought it would be amazing if it were possible to see how certain sizes were more or less popular. Or maybe something about how countries represent the values of their coins physically (ala low to high, copper to silver to gold, or aluminum to bimetallic). Feel free to chime in with any other ideas on how it would be cool to see all the different aspects graphed.