I haven't tried freezing in ice cube trays; great idea! In our house, fruit smoothies are the breakfast du jour, especially during the hot summer. I bulk-buy fresh fruit when it goes on sale and then clean and freeze it individually. For example, I clean and chunk strawberries, pit cherries, pick over blueberries, etc, and then freeze them for an hour or two on plastic-wrap covered cookie sheets. Bananas work, too; when I find turning bananas on sale, I pick up 10 pounds or so and chunk them, dip them in lemon juice to prevent browning, and freeze. As soon as they're frozen, I pop them off the tray (this is where plastic wrap makes things easier and less messy, but it's optional), and dump all the chunks in gallon-size freezer bags. I've also frozen them in serving size snack/sandwich bags, then put those into a gallon bag; they last a bit longer that way. Either way, I can pull out a handful of individual berries or banana chunks w/o them sticking in a lump, then dump them in my blender with a cup of skim milk. I wind up with something the consistency of a milkshake, no added sugar or chemicals, and it's a great start to the day. I've found it helps to let them thaw a bit, 5-10 minutes or so, to avoid choking my blender. Using frozen fruit keeps me from needing to add ice to the drink to water it down. Plain yogurt or pineapple juice are good alternatives to the milk, as well. And berries needed for baking, etc, can be used the same way. I imagine you could also puree them ahead of time and freeze in cube trays and go from there. A huge time saver in the morning and a relatively inexpensive breakfast!