Many, many concepts have been floated to attempt to improve the food-waste situation. Some are simple consumer-facing solutions, like convincing people to eat less-than-perfect produce, reducing the size of the average refrigerator, or encouraging people to shop more often and for less food at a time.
I always try to get creative with how I make them. You can put all kinds of things in smoothies. Flavored yogurt (frozen or regular!) ice cream, frozen coffee ice cubes, fruit, peanut butter, chocolate syrup, honey, juice and even oatmeal. Maybe not all of those things together, but you get the idea.