The Mando war dance reminded me of the Maori Haka, but also of a nasty little game called Suicide (which I've never played, only had described to me).
Suicide involves a line of players, each equipped with a boomerang. First throw is a straight out-and-back throw, catch with right hand. If you fail to catch your boomerang or are hit by another's boomerang, you're out. Second throw is out-and-back, catch with left. Third throw is catch behind the back, either hand. Fourth throw is catch under the leg, either hand. Like the Mando war dance, you mess up, you get smacked.
I have just finished Karen's non-Star Wars novels, City of Pearl, Crossing the Line, The World Before, and they're every bit as good as her RC books ... her work with police/military/political/press really shines through. Check 'em out.