How to make a dog leash out of Jeans.
This is a quick and cheap way to make a good quality dog leash. As long as you make it with a sewing machine, instead of hand sewing, it should be just as strong as a store bought leash. Just be careful not to wash it in a washing machine because that may damage the latch and it wouldn't be safe to use anymore.
(For a better view of the finished leash full view the image above; it got cropped awkwardly in the preview.)