http://wastelandleatherwork.viviti.com/
I offer a simple leather sheath with all of my knives, but if you want something special, Wasteland Leatherwork is the official custom sheathmaker for JK Handmade Knives. Wasteland Leatherwork is a one man shop run by Noah Legel, who does some fine leatherwork. He is the only custom leatherworker I recommend for my knives. Click on the link, and it will take you to his site.