An island could be anything. Could be a bare rock of a few dozen square meters large. Hence the first object I'd request would be a cornucopia spewing all the food that I need.
But the whole thing would be more interesting if subsistence was a precondition. In that case I'd probably request some fellow people to share my isolation with. If this does not qualify as 'one thing', I'd take a musical instrument. Playing an instrument would be great to pass the time, and I might get really good at it.
Say if I'm on basically a huge floating rock with no plant life whatsoever, I'd want a nice box full of food and water to last me about a month, sort of what HahiHa mentioned, the box and its contents counting as one whole item.
If i like my country?
hahahaha i think no
too much corruption, crimes, taxes, taxes, taxes... oh more taxes...
if i could rate my country from 0-10, being 10 the best
at the max, i'd rate it a 2
my country could and should be much better