To dream of an ice cube melting suggests a time limit on a current situation that you may be feeling pressure to complete.
A lone ice cube may suggest that you are not as interested in an idea as you once were but that you may feel shy in expressing your feeling in fear of upsetting another. Many ice cubes rattling around speaks of an irritating person trying to get your attention, keep your cool as they are likely to fade away fairly rapidly.... Dream Symbols and Analysis
To dream of putting ice cubes into a drink suggests you should stop wasting time or money on meaningless, temporary pleasures.
If you dream of someone throwing ice cubes at you, you feel neglected or mistreated by someone close to you. You may suspect that they are not sharing their true feelings with you.... My Dream Interpretation