Check out this video from Chemical Reaction Tutorials (CRTutorials). If you love filmmaking, prop making, editing and everything else that goes along with making movies, then you'll want to see what Adam has to say about ice hands.
Adam explains how to create a smashing ice hand film prop. Making an ice hand is easy, just find a latex glove and fill it up with water, then freeze it. You can use this dandy prop for making cool effects, like broken fingers, or smashable hands. You can even make an ice crystal with this process.