I had a brainstorm while meandering the aisles of my local Dollarama recently. I was in the pet aisle (for no particular reason, I don't have a pet...!) and I noticed a section of pet brushes with wire bristles. They reminded me of drawing mats that wigmakers use for holding and organizing loose hair while working, so I thought, why not?
I bought 2 of them for $1.25 each, and when I got home I took them apart. They just unclip at the back, and come apart very easily. The bristled mats just popped out and, and presto! A pair of mini drawing mats!
The bristle area on each brush is only 1.5 by 3 inches, but they are fine for holding small amounts of hair while working on a project.