Been working a bunch on kettlebell juggling lately. I almost forgot how much fun it is!
Here is a clip of some partner kettlebell juggling with me and my friend, Tyler.
You must know how to do the basic moves before you can start doing this especially as you move beyond just the front flips. You can start to do most, if not all, of the moves you can do yourself, just now passing it to the other person. This opens up to doors to the possibilities even further then just juggling kettlebells by yourself.
To learn the basics pick up The Definitive Guide to Kettlebell Juggling.