Since I knew that this was a rare opportunity, I ran to the closet got out my bow and a couple arrows. I took aim and shot. Luckily my wife was there with camera.
I really didn't want to waste anything so I pulled out one of the flint blades I am working on. There are many useful pieces in the package, just avoid any invoices, they tend to leave a bitter taste.
I decided to skin the box and stake it out to dry and then harvest the tendons therein. I hope you all enjoyed my very legitimate method of harvesting wild sinew.