Convenient ice making: Allows for easy creation of ice cubes for drinks and other uses.
Spill and odor protection: The lid helps prevent water spillage in the freezer and keeps ice cubes fresh by blocking out odors.
Easy ice removal: Some trays have features like a twist mechanism or individual cube molds for easy release.
Stackable design: The lid often allows for stacking, saving space in the freezer.
Versatile use: Besides water, the trays can be used to freeze herbs, fruit, coffee, or baby food.
Complete set: Some sets include a storage container and scoop for added convenience.
Compact: Some designs are made to take up less freezer space.
Multiple ice cubes: Some trays can make many ice cubes at once.