Ice cubes used in shoots are made of acrylic, so they do not move or melt during the shoot, which may take place under hot studio lighting. Prior to the widespread availability of acrylic cubes starting in the 1970s and 1980s, glass ice cubes served the same purpose.
To maintain stability during shoots, ice cubes are manufactured from acrylic, allowing them to remain stationary and unaffected by temperature fluctuations. Prior to the advent of acrylic cubes in the 1970s and 1980s, glass ice cubes fulfilled a similar purpose.