If you can't find it, make it! You'll need a heat gun, heat tolerant work surface ( I use an old Corning Glass cutting board ), rubber stamp, ink pad, embossing powder, and a smooth surface button. I used a portion of a larger stamp and gently pressed the button on the stamp. Sprinkle on embossing powder, shake off excess and heat until the powder melts and is glossy. To keep fingers safe from the heat, skewer the button shank on a pipe cleaner.
I have two custom buttons left over and will send them and a mini fabric stash to a lucky winner randomly selected from readers who leave a comment here or on this post on Creatingthehive! Comment by February 1st to win!