Easy but powerful bookstand in your shelves for group. Only teleport trough any publication you enjoy.
This matter is derivative of http://www.thingiverse.com/thing:5430 The first layout was a wonderful thought but was crappy to print. I recreated it in Google Sketchup. In the event you feel like playing with it, editable sketchup file is attached.
Print both halves of two and number paste them together and stands. Painting portal sites to proper colours makes it interesting.
This layout is appropriate for most publications and is 12cm high but in the event you've publications that are big scale it up.