one buys the screen, heats it up and presses it onto a 1 inch or
so length of 1 1/2 inch or greater diam. pvc pipe. trim off the
excess screen and voila, a cheap and very functional granule
Alternatively, you can heat up the screens and press into
rubbermaid stackable leftovers containers (which have had the
bottoms removed). Then cut away the excess screen. Remember to
leave one stackable intact for the bottom of the pile. (idea
comes from John Cogswell).