A super-simple, ultralight dog leash for my best friend. Total weight came in at 13 grams.
1) Cut poly cord to desired length (you'll lose several inches for the knots, but gain additional length from the handle) 2) Cut MIL-SPEC nylon grosgrain ribbon to desired length for your leash handle/loop 3) Cut an additional ~4" piece of MIL-SPEC nylon grosgrain ribbon 4) Place the 4" piece of grosgrain ribbon at the end of the leash handle piece for reinforcement 5) Loop ~2" of grosgrain ribbon back on itself, including the reinforcement 6) Loop the other end of the ribbon back around and terminate ~1/4" from the end 7) Secure the ribbon in this position with Gutermann MARA 70 thread, being sure to leave a reinforced opening at the end for the poly cord to pass through 8) Run the end of the poly cord through the opening left in the leash handle; tie off with a bowline knot 9) Use a bowline knot to tie the other end of the poly to a lightweight carabiner; or, for ultimate weight savings, you can make a bowline with a several inch loop and then use that loop to tie your new leash to the d-ring on your pet's collar
*13-gram weight listed includes the use of an Ozark Trail 6cm carabiner