TheKitchn.com's fruit slushies, Shape.com's raven slush and SeriousEats.com's sake melon slush are some recipes for frozen slush drinks. While the raven slush and sake melon slush call for alcohol, it is generally possible to omit the liquor for a child-friendly beverage.
To make The Kitchn's fruit slushies, chop 1 1/2 to 2 cups of mixed fruit. Use any type of fruit that is desired. Pour the fruit into a blender, and add 1 cup of ice and 1/4 cup sparkling water as well as additional flavorings such as mint, lime, honey or ginger. Blend on high until smooth, and drink immediately.
For the raven slush, fill a blender halfway with ice. Add 2 ounces of acai-blueberry flavored vodka, juice from one lemon, 1/2 an ounce of agave nectar and 1/4 cup of frozen blueberries. Serve immediately.
To make the sake melon slush, combine 2 cups of ripe cantaloupe, 1 inch of finely chopped ginger, 1 ounce of lime juice, 1 ounce of honey and 2 ounces of sake in a blender. Blend for about 30 seconds, or until smooth. Pour the mixture into a 9-inch square metal pan, and place in the freezer. Once the mixture is frozen, scrape with a fork until fluffy. Serve immediately after scraping.