I can vividly remember the flannelgraph storyboard.  When I was a boy my Sunday School classrooms were always furnished with what I can only describe as a felt-covered whiteboard - sometimes attached to the wall and sometimes perched atop a flimsy easel.  Cut-out characters and objects from popular Bible stories could be stuck and un-stuck from these storyboards and arranged in a seemingly infinite number of ways to help illustrate whatever story-point the teacher was trying to make.