Bouyancy

Talking to my sister in hopes of inspiration, and she came up with the idea of doing something related to buoyancy. So I'm thinking of testing the buoyancy of one particular object in various liquids. Either completely different liquids, or perhaps water with varying amounts of salt. Will have to think about exactly what I want to test and how to go about it. Yay for at least having some sort of idea, however vague it may be at the moment.