Dog leash
A four-plait leash with a spliced loop, rated for the strongest puller.
Rated for the strongest puller
A four-plait round braid with a spliced eye for the handle. It's stronger than the snap hook you attach to it, and it gets better looking the more it's used.
What you need
cord 4 strands × 2.5 m of 5 mm polyester knots crown (for the splice), whipping hardware one snap hook
The build
Braid the four strands into a round plait, splice an eye at one end for the handle, whip the splice, and clip the hook on the other. Two hours, and it outlasts the dog.