I learned to spin poi.

By which I mean, I smacked myself with a high-speed beanbag in every available body part including the back of my head.

(One of the award finalists is apparently a beginner poi-spinner, and she had brought her practice beanbags. I learned a couple of simple moves, but it was getting too late at night for me to master the three-beat weave, and eventually I had to admit defeat. But one presumes she'll be back next year . . . .)