Bins haven't worked for me, so I made a diaper. Plastic grocery bags are held onto the poop chute to collect debris. You don't even need to get behind the machine. Reach behind to remove the diaper periodically to empty it. Magnets are arranged so that you can snap it back on by feel.
This item consists of three parts.
When printing, add the appropriate pauses to put the magnets in. I use a drop of CA glue inside the holes to keep the magnets from sticking to the print head.
The author marked this model as their own original creation.