L.,
We have a Magic Bullet that we use to make smoothies. Each person can have thier own cup. I also use it to puree fruits, and veggies, and have also used it to chop nuts. It is powerful enough to grind ice or frozen fruit. What I like about it is that I can make smaller quanties at one time and all I need to do is switch the blade attachment to a different cup to make an individualized smoothie for different people.
Something else I was just made aware of is that a canning jar will fit on the blade attachment for standard blender, so you could do the individualized "cups" by switching jars. I havent personally tested this on a blender to see if its true or not, but thought I would mention it.