Soothing Smoothies Anyone?

My students run an economics business. We will be selling Smoothies and Healthy Snacks. I've written a grant for adapted knives, blenders, and cutting boards for my students. I have 1,000 Smoothie cups and lids in our basement! I would like recipe ideas for Smoothies and Healthy Snacks. I am thinking of Dill Pretzels for our first Healthy Snack. Please submit ideas. Thanks! Our profits will be used to take field trips.