![](http://photos1.blogger.com/img/98/2298/320/epidiascope.jpg)
A very useful but somehow neglected tool, epidiascope is a projector for use with opaque as well as translucent objects. Put a book, a sheet of paper, a picture or a small 3d object on the scanner-like top, and see the large image on the wall. This particular Braun Paxiscope XL Epidiascope goes for about $400.