I would say a circle shaped piece of wood (hollow) would float best because a normal piece of wood floats pretty well (square). But a circle piece of wood would float even better cause its even & hollow.
Shapes that float best on water include, anything that is light,and it also depends on the items/ object's density.
Create the bottom of the float so that it is black. Use glass tubes and other shapes illuminated with neon lights. Accent this design with some large mirrors to reflect the illuminated shapes and make an amazing effect. This float will work best if it is used at night/ in the dark. The light ruins the effect.
Witches.
an object will float on salt water best
Triangle shapes are best
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cream
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J.W Young.
eggs, if i may. eggs can float in saltwater but not tapwater. in my opinion, eggs are not the best floating object for saltwater but they are one thing that floats
The density of water is roughly 1 gram/cm3. If the density of the substance is less than that, then a solid lump of it can float. Otherwise it can't, but you can form the lump into shapes that can float, just as plate steel is formed into the shape of cruise ship or an aircraft carrier.
The best types of serves are either a jump float or a jump serve.