Head to the fallout shelters, it's a zombie thread!
[grrrr.... braiiiiiinnssssss.....]Anyway, i was searching for something similar and this thread is all that came up. It's a pretty neat idea, and apparently nothing has ever come of it.
I was actually thinking of having a necklace made out of a ton of bear teeth and boar tusks (like 50 each) that could give hunting related boosts based on quality (marks maybe?) [new thread for this idea maybe?]
But just having a purely aesthetic trophy that scales somehow with the sheer number of critters killed would be fun too

"Bein' a minotaur is a lot like bein' a regular human except moo" - J. Rowland