Weight Watchers does carry some foodstuffs at the meeting locations and their smoothie mixes are a good buy. It's a little pricey compared to Carnation Instant Breakfast (for example), but very versatile (recipes for other things are included).
So with a little experimentation, here's a recipe that I had earlier today. It's a hearty 5 points, and worth every slurp!
Mixed Berry Smoothie
Serves 1; 5 points
1 cup fat-free (skim) milk
1 WW French Vanilla Smoothie packet
1 cup frozen unsweetened berry mix
Put in blender and blend to desired consistency. I usually hit puree, aerate, then liquefy. You will have a milkshake-consistency smoothie that is delicious -- you get 2 servings of milk (yahoo!) and one fruit (maybe two?). YUMMY!!!