Squared Circle Charm
So unless they're hidden somewhere and I've just bumbled past them, there didn't seem to be any files for this particular design posted on thingiverse. This was a grave injustice that I just couldn't abide by, I figured I would post it online to save anyone else who might be in a similar situation.
Both STL files are currently set for a 30*30 circle that's 3 mm thick. I included the imprint version but I think the other version came out better, it just has way more 'pop' especially when its printed in two colors.