On a side note, I saw a video on prosthetics the other day and glasses like this were one of the first. They helped people who had their nose and upper lip damaged. Just an FYI, not an insult.
Good idea. I would propose a sticker instead of a stick pin. It is easy to print a page of small "Do you CoinTalk" stickers. At large shows everyone has a badge where you could apply the small sticker (or just stick it on your shirt). Very best regards, collect89