Oh I already know about mountain climbers
I Crossfit so we do kettlebells somewhat. Our local recreation department also offers Kettlebell classes from RKC instructors.
I am going to be in the Encinitas area in a week or so, maybe I should stop by for a class although their website doesn't say how much. We will be taking our TRX with us but not kettlebells (we tried to take a kettlebell on a plane once, TSA almost took it).