What are Some Good Science Fair Topics?

Picking a good science fair topic is dependent on your interests, but some cool topics include, can liquid water float on water? how salty does the sea have to be for an egg to float? Do warmer seas make stronger hurricanes? You can find more information here: http://www.sciencebuddies.org/science-fair-projects/recommender_interest_area.php?ia=OceanSci