Dissolve gelatin, soft drink mix and sugar in boiling water. Stir in cold water and pour into popsicle molds or small plastic drinking cups. Freeze until hard. (If using plastic drinking cups, freeze until firm, insert popsicle sticks, then freeze completely.)
I saw a few other recipes that added a bit of yogurt to make the popsicles creamy, so we added a small container of flavored yogurt this time and it tasted great!