If you sign up for email offers on the Caribou website, you'll get notices of their deals.
Just in the last few months there have been 3 times where they were giving 1/2 price drinks for some reason or another. That means you can get the fancy drinks and not feel so guilty about the hefty price tag.
Saturday and Sunday they are giving a free kids hot chocolate for every coffee purchased.
So get on over to your nearest Caribou!
For us, it's only a few blocks away. We pretty much only go there when they are having some sort of special, but it's fun having one so close.