For a knife, I would take my Camp Tramp (don't have a DFLE....yet <img src="/ubbthreads/images/graemlins/smile.gif" alt="" /> )
For a CD/BOOK, I would the Bible on mp3. <img src="/ubbthreads/images/graemlins/thumbup.gif" alt="" />
I don't drink alcohol, so providing that there was a source of water, I would
take something like "coffee" <img src="/ubbthreads/images/graemlins/grin.gif" alt="" /> (surprised no-one mentioned that yet)