Quoted from DCFAN:How about this:
http://forum.arcadecontrols.com/index.php/topic,144539.msg1502469.html#msg1502469
To buy:
http://www.arcaderestoration.com/products/1/ACV2/Any+Coin+TM+V2.aspx
any coin universal.jpg
Hands down the winner for what Mudflaps wants to do.
Its so cool to see all of these non-commercial products coming to life with the help of 3D printers.