Thanks Japan...

[Draco18s]

...your municipal flags make for great bullet designs.

Spoiler for Hiden:

http://designmadeinjapan.com/magazine/graphic-design/design-in-flags-the-beauty-found-in-japans-flags/

It should be noted that in 99.8% of all cases, flags and coat of arms are public domain. Specifically in Japan's case:

This image* is now in the public domain because the copyrights of the works in names of organizations in Japan expire in 50 years after the publication, or in 50 years after the creation if the works are not published within 50 years after the creation (article 53).

*For the five I posted here, others may differ.

So creating bullet shapes from them would be allowable (and also likely Fair Use via Transformative Work).  Be free (my) modders, be free!

[Pumpkin]

And also a great inspiration for sci-fi alien civilization flags.

I love them. Thanks for sharing!

[Draco18s]

And also a great inspiration for sci-fi alien civilization flags.

Oh definitely. And most of them can be found in either large format, transparent, or SVG for easy editing.