After my roommate got back from a primitive skills gathering in the N. GA mountains, he was trying to start a bow and spindle fire in the living room to show us how to do such a thing. We became convinced after the spindle started smoking and moved onto headstands. Each of the four of us had a particular style of head and hand stand that we showed off to the group. I have not been in a group that body-aware before and it led to The Dragon:

I've never heard of AcroYoga, but thoroughly enjoyed it.
(i conjecture that the top and the front person could wear Mindfolds, but the foundational person needs too much balance)