I think the shape of the country itself is very symbolic. A tattoo of that would be pretty cool, especially if you can get it in green ink. Maybe just have the outline of the country, and have letters inside that say SAIGON, that take up the whole country. Then again, if you do that they may have trouble, if you go to Vietnam, so instead you could put a dragon inside the outer lining of the country. Another idea, is just put the words, VIETNAM Inside the outer lining of the country. Hope you like my ideas.