When I was young and frisky, blender drinks meant an alcoholic beverage that we ordered from the bar while catting around the bars and clubs on the weekends. A blender drink was usually a Daiquiri or a Margarita, served in large stemware with fruit garnishes and sometimes, if you were lucky, even little chinese umbrellas spearing the fruit and resting on the edge of the glass.
Nowadays a blender drink means a healthy substitute for a meal. I use fresh orange juice and crushed ice as a base, and add whatever fruits and sometimes vegetables that I have on hand, usually at the least a banana and strawberries. But it can be apples, pears, blueberries, blackberries, or grapefruit.
If fresh fruit is hard to come by, I pull a handful of something good from my freezer or dump a can of something packed in light syrup from the pantry shelves. A few minutes in the blender and I have a tall cold drink that I can take with me on the run. It isn’t hard to come up with nice looking garnish that is good for your health as well.