I had yellow pins years ago, but finally got rid of them when I discovered I left one in a project for six months, came back to it and it rusted.
I have a ton of pins, pins with silver beads, silk pins with white glass beads, long pins with crystal ends, corsage pins with faux pearls and I finally ordered flat head pins. Not sure why, I just kept forgetting to order them until yesterday, lol.
Also have bent pins, I keep those in a dedicated Tostito dip glass jar, along with bent needles and other sharps. Once it's full, I hand it off to the landfill so they can dispose of them properly.