tdiprincess, I find the Special K ones in the water aisle, but they also could be in the drink mix aisle.
Sounds really yummy!
I've had the granola clusters. I don't like the ingredients much, so I've only tried the mixed berry one. It's a bit more convenient than putting your own granola in a container as it comes in pouches, but I found it to be rather hard on my teeth (which aren't very sensitive). It really is a "cluster" thing, so I imagine it would make for a good snack to eat with your fingers, but I just wanted something to put in my yogurt, so I had to break them up a bit, which was messier than my usual granola, which I just pour in. Just my $0.02!