A simple poop bag holder for on your dogs leash for used bags. Popular among our walking group considering the full bags no longer need to be held, but hang on something you have to hold anyway ;)
The author remixed this model.
Reduced the slots and hole for the poop bags. The poop bags I use simply slip through the hole of the original. I also tried a variant with an even smaller opening, however, the bags were difficult to slide in there.