Flaccid collars are sooo undignified. Distinguished gentlemen (or ladies) would not be caught dead without monogrammed collar stays, and the distinguished, geeky gentleman (or lady) exclusively 3D print his (or her) own.
Don't want my initials on your collar stays? Tinker with my design, including the initials, on Tinkercad here, or you can just use the boring old blank collar stay file if you're not feeling fancy today.
If, like me, you find yourself suddenly curious about the history and styles of collar stays, here's a webpage that can satisfy your dignified (or geeky) curiosity.
Not sure how much printing with 100% infill makes a difference with a thing this thin, but I say better safe than sorry when dealing with sharp looking collars!