It was a frustrating thing to have to carry all the paper waste downstairs, so quite a lot of it ended in the mixed bin for a while. I decided that enough was enough and certainly I could make one with what I had at home.
I used old IKEA black and white cotton canvas and some heavy weight interfacing and made this:
It has worked very well and even though I was slightly worried about Husband's reaction to the psychedelic pattern, he was cool with it.
I think this was a pleasing way of decreasing my stash and solve a sorting problem.