Contact your homeowner's or renter's insurance company and pretty much all of them will offer a "floater" or "rider" policy for specific items outside of your house being damaged or destroyed.
My iPhone is covered by Statefarm (my homeowner's insurance company) under a floater policy. If it gets lost, stolen, or broken in some way they will cut me a check to just buy a new one. Make sure you get it insured for the non-upgrade price of what ever model you have.
Edit - Oh yea, the cost is $25/year for mine.