These sold fairly well at the last con I went to (sold out of Vinyl Scratch, Rainbow, Luna, Trixie, Time Turner, Twilight and Celestia)
Actual artwork can be found here: [link]
The photo makes a lot of these look pretty dark since my light situation wasn't that great so i figured I'd throw that JPG up
As far as selling these online. I plan on editing a few of these designs / adding more characters to the set and then putting them up for sale somewhere. Right now I have no convenient method of shipping them out so I'm not offering sales just this moment. I'll let you all know when I can get around to doing that!
Each button is 1.5in in diameter