Here are a couple skins I have.  I am not likely to be able to find pairs to these skins but maybe you can do something with them anyway.  I'm looking for a shield or parabolic feather chopper 4" or 4.5", and Turkey feathers. 
First is a coachwhip.  It is 40" long.  It has a hole that you can see in the pics.


Second skin is a 38" spotted python.  Really neat skin but unlikely to find a mate to it.  Decently thick too.


And the third is a 38" Corn snake. 

