This book scanner uses simple materials and you can make it with ordinary hand tools. An electric drill, a saw and a glue gun are pretty well all you need. It also folds flat. I've put the whole scanner into a medium sized suitcase. Using it, as you'll see on the videos, is very, very light work. Just lift the light weight counter-balanced acrylic platen, turn the page, lower the platen and fire the cameras.
Some people have now made a larger version of the scanner that will scan documents like archive newspapers and ledgers. So it can easily be scaled up for scanning larger sized materials.
The video links on this page will give you an overview of the scanner and how it works.