If you were on your way to a deserted island and could only bring one thing with you what would you bring?

Question: If you were on your way to a deserted island and could only bring one thing with you what would you bring?
- Keywords:
  philosophy,
  quirky
Asked by makapaka101 to Hannah, Gopal, Becky on 27 Jun 2013.
- Rebecca Cook answered on 27 Jun 2013:
  
  Assuming I had everything I needed to survive on this island, I would bring the last harry potter book to keep me entertained!
  
  If I was thinking more of survival terms, I would take a desalination machine to make the sea water drinkable!

Question: If you were on your way to a deserted island and could only bring one thing with you what would you bring?