WHAT—

https://www.adafruit.com/product/4373#tutorials

(Edited to replace kickstarter link because KS owner is a evangelical self-defense missionary person and creeped me out: this version goes to the infinitely less-dodgy Adafruit.)

Tactical Multi-Tool Hairpin / Hair Clip

Trends come and go, but preparedness is always in fashion! Have you ever been in a situation where you desperately needed a screwdriver right away? Now you can have one at-the-ready all ...

@cstross I am somehow reminded the of the suffragette hat pin.

https://tacticouture.com/ seems pretty practical, all in all. And there would have to be a market for lowered-vulnerability femme presentation accouterments.

TactiCouture® - The World's First Utilitarian Fashion Line

The Fusion of Chic & Preparedness - Improve | Overcome | Adapt. Home of Tacticlips, The Knifelace, and the 100% Kevlar Ballistic Scarf.

TactiCouture®
@graydon @cstross I love it (if only because it's very pretty), but am unconvinced that it would be safe for the hair being clipped. I think the hair might be clipped in a different sense of that word.
@JulesJones This! As a person with long hair looking for ways to non-destructively clip locks back, it's just no...
@muninnhuginn they actually admit it in the disclaimer at the bottom of the page in their website.