Besides the standard leather anyone making and from deer hide? I was thinking of lining it cow or groundhog rawhide to protect it from the knife. I will be tanning two deer hides soon and want to use my own kill for the sheath. I don't have cows I can kill and oak bark to do the vegetable tanning. I was thinking of shaping the raw hide wet to the knife and then making a deer hide sheath that held the liner.