Blackberries in disguise: Making a girdle book slip-cover

Looking for a way to disguise your modern devices (cellphones, blackberries, etc.)? Consider making a girdle book, a period leather cover used to attach books to a belt. Crispin Sexi (Jaysen Ollerenshaw), offers instructions online on how to make one.

From the article:

The term "girdle book" refers to a book that was bound in such a way that it had a "tail" that could be tucked into one's girdle or belt. This left the book hanging upside down; when the wearer wanted to read the book, they simply picked it up and opened it. When the book was being read from a table or lectern, the tail would have draped down off the edge.