Here's just something I came up with a couple days ago. It might not be original and I may be way behind the band wagon (not the first time) but it tasted good going down so I thought I'd share.
First I grabbed some low fat vanilla yogurt. I used Western Family (because I'm cheap) and it worked out great but go with whatever you like. Then I filled up a couple ice cube trays with the yogurt and let it freeze over night.

Tada! A bowl full of frozen goodness. I just slipped these into a freezer bag and stuck them into my freezer to wait until I felt like cranking up my smoothie machine. a.k.a. My kids aren't paying attention so I can be selfish and drink it all up myself. Hey, they get plenty of snacks...it's the Mama's turn!

So today I grabbed 5 cubes, added 1 cup skim milk and about 1/3 cup blueberries, then cranked away. I did throw in a few ice cubes to keep it slushy. Out came this delicious concoction. Blueberry bliss! My husband would've added some sugar but I thought it was pretty good. If you like it a little sweeter then add whatever sweetener you use.

If you stick with a no-fat yogurt, skim milk, and some frozen fruit, you've got a pretty healthy smoothie to slide down the pipes. ENJOY!
(I've yet to experiment with other flavored yogurt so if you have, let me know what you did!)