I posted a picture so others can see what you are talking about.
It is not too large but big enough to make me not want to carry it. I put all my cuttings or discarded leaders in a pocket and dispose of it at home.
I might carry something like the Microtrash if it was rectangle instead of round. If it was an inch wide and two inches long I might carry one. That is when I wear a vest. When I wear my chest pack there wouldn't be enough room for the Microtrash.
Fishpond Microtrash Container 3.2” x 1.9” dia.