We have four rather large showcases outside our Library (silly architect)! Mind you, they are showcases not bulletin boards, so they need to have 3D items in them. One of my pet peeves is an empty showcase or bulletin board. Here is what I came up with as a quick fix, when other groups are not using the showcase and they are empty. I collect very large cardboard boxes (like filing cabinet boxes) and cut them into large panels for drawing. Then I use that old monster called the Opaque Projector to draw on the cardboard panels. I use things like clipart books that are not copy righted. Once I have the picture outlined in pencil, I trace over it with black marker, paint it, and cut it out with a hobby knife or box cutter. The figures are almost life size--each has a word bubble sign. It only takes a few minutes to put them in or take them out of the showcases. I have made several sets that I will just reuse. Click on the slideshare below to see our latest display!