Okay. It's not today's daily prompt, but still... Five items I have to have on a deserted island? Well... I'd say weapon, the blade kind. Not a gun or a bow. Then a magnifying glass, because it can make fire. What next... No clue... Something to amuse myself with, therefore, books. Or something. Next would be probably sketchbook + pens – counted as one item only.
And last... Fishing rod. Why? Well... it's an island! So I would go fishing. xD Not that I ever did, but it's never too late to learn. xD Right?