I ordered some buttons with the idea that they’d sell well enough at a fall/winter craft sale here. I have at least 50 to 100 of each of these two pieces. I also have a stack of neodymium magnets (5-6mm, 1-1.2kg pull), so with a pair of wire snips, these pins become rather nice little magnets. I’ll do the modifications for you if you want; same price.
Feel free to buy them through the Etsy store, but if you’re reading this here, just send funds directly to email@example.com and I’ll only ask for $2 each, plus shipping of $3 total up to about a dozen or so. Save, save, save.