One thing that you can do to kind of get started is to run Edit > Separate on your object to break it into individual surfaces, then use Offset to offset all the surfaces. That will get you some chunks of stuff to work with - the offset surfaces will meet up ok in places where surfaces were touching each other smoothly but in areas where there were creases there will be gaps between the offset surfaces that you'll have to fill in. And also in areas that were tightly bent it's possible for the offsets to be bunched up and self intersecting.

- Michael