What about the stacks of unplaced "back issues" everyone had laying around their house but were too conscientious about them to throw them away ?
They used to "encourage" every member to have their own magazine subscription and of course there was the door to door subscription campaigns, as if any non JW would want a years subscription of the magazines. I never could bring myself to ask anyone if they wanted one.
I remember how you were supposed to put any left over "assembly meal tickets" back in the contribution box, rather than save them for the next assembly.
They not only made profit on the food you ate and made money on food you didn't even get.