I got this from Candy Magazine September Issue on how to make a collar pin in just an easy way. Obviously it is a do it yourself so the expenses is not much. So here’s how:
You can draw an egg and a bacon strip on a used film. Make the size bigger at least three times than of what you imagine for a collar pins.
Cut your drawing and put one hole at the bottom part of the bacon strip and an egg.
Put it in an oven toaster for at least 3 minutes and after 3 minutes put it out and fill it up with color. You can use a marker or an acrylic paint.
Put the bar pin, glue it at the back of each design that you draw. For you to connect each pin stronger to the opposite end with chain link, you can use pliers.