It's so cool if you can make one of this by your own, (saw a post in B'central perviously for how to making it). But I am a lazy guy just brought from somewhere, and it's plastic only, but still looks Cute. http://cgi.ebay.com.au/5-x-Mini-Badminton-Shuttlecock-Keyring-E-Packer-/300470866289?pt=AU_Tennis_Sporting_Equipment&hash=item45f5759171
There is real feather version of this available somewhere. I got a feather one as a gift about 15years ago and it's still in its original package (minus the key ring). I'd love to take it out of the package, but I've yet to figure out why I would want to do that, since there's no real world use for a miniature feather birdie.
It must be extremly expensive if they made by read feathers? Will be great if you can show us your collection . I have seem a steel one before.