Is it possible to make your own floating island?

I make my very own brown floating logs on a daily basis.

Sure, just dump a few million truckloads of sand into the harbour and she'll be right.

Not sure how 'islandy' you're wanting your floating island but this is pretty cool...

http://www.firebox.com/product/4893/Project-Utopia

Depends on the size. Is it big? small? Short? Tall? Tropical? Deserted? Gotta think bigger than what the blue prints say.

Yes it is very possible. In fact they have already done this. They have done this for places like hotels and casinos. However they have to constantly resupply the island with sand or it will be washed away. They are man made and created by piling sand till you get an island. Most of these man made islands are meant to look pretty and are made are certien shape usually something associated with the hotel or establishment. You can do it takes a lot of money to maintain though. Since you have to constantly supply new sand so it wont sink.

It is possible and has been done before by putting thousands of empty bottles under the "island"

Floating like on water or air

Jeremiah Fink: "Only Columbian ingenuity could create such a thing!"