I have a good recipe for a smoothie:

Take a blender and add:
2 1/2 cups of milk (whole milk or half and half)
4 scoops vanilla ice cream
4 scoops peanut butter
1 banana
1 cup organic chocolate

Mix it up real well for about a minute or two. It will come out real thick. Very refreshing and your kids will love it! (You might want to refrigerate the smoothie for 15 minutes to make sure its cold before serving!)