This is a remix from the Feminist Logo earrings (https://www.thingiverse.com/thing:2947032) from @juanmacuevas. I've just put a couple of cylinders in the back. One on top and another one smaller as a "housing" to acomodate the safety pin.
Just painted the top most part with acrilic painting.
Opened the Feminism logo stl on Meshmixer and added the two cylinders appending to the existing surface.