A company I previously purchased from make bespoke billet aluminium badges.
I had a one off badge made a while back and the quality was superb.
So if any of you would like any type of billet badge made I can highly recommend their service although they are from the US so it does take a while.
They can do larger quantities so if there is a decent take up there could be a group discount available!
The image below is a photoshopped mock-up of what a tribute badge might look like in the Ferrari style should you wish to keep away from Ferrari badges.
URL is: http://www.emblemart.com/index.html