Hmmmm... I'm assuming this would be a tropical island, and not one filled with ice and snow. That would kinda change my priorities.
Anywho, here it goes. Things I would want to bring to a deserted island would have to be:
1 - Sunglasses - my eyes are ridiculously light sensitive.
2 - Sun lotion - my skin pigmentation is one of the red-headed variety, in other words close to non-existent. Sunblock sounds like a good idea!
3 - My husband! ♥ :)
4 - Cloud and Tifa ♥ Can't be without my babies! ;)
5 - Several knitting projects is a must!
6 - Portable wi-fi (or in the worst case scenario a satellite phone...)
7 - Lip balm! Without that I die! ...yeah, slightly addicted.
8 - A camera with many different lenses and several memory cards! Imagine all those wonderful pictures I could take!
9 - A hammock with a mosquito net! ;)
10 - ....a huge yacht with endless amounts of fuel? ;)
Have a good one!