Either attach something heavy to the ice, or play with the density of the water, or of the ice (adding something to it).
anything denser than the water will sink in it.
As long as the feather stays all by itself, it will never sink in water, because its density is much less than the density of water. If you really need to sink it, then you must tie it to something much more dense, like a rock or a fishing sinker.
An egg will sink in water but will float in salt water. An egg will sink faster in hot water than it will in cold water.
Weigh the item down or find a way to fill it with water. For it to sink it must have a greater mass than the liquid it is placed in.
Pour the water out
Objects sink or float depending on their Mass and density. If the object has a Density LOWER than water, it will float. Higher than water will sink. You can find density by multiplying its Mass times its Volume, there you have its density. Water has a Density of 1, things with lower may sink, only slightly if there isn't much difference.
Paper will sink once it has absorbed enough water to make it heavy.
put water in it
Yes, it may make oil sink if at some temperature the density of water goes lesser than that of oil.
Tap water sink water well water ect....
You can find a filtered water spout for your kitchen sink at home improvement stores, kitchen supply stores, or online retailers. These spouts are designed to provide clean and filtered drinking water directly from your sink.
it sometime sink if it has tu much water but yes it floats