Another dance I haven't seen mentioned yet in this thread is the
six-couple circle dance "Thread the Needle", not to be confused
with various other, very different dances also titled "Thread the
Needle". Here's a description:
Thread the Needle
Circle of six couples, numbered (in ccw order) 1, 2, 3, 1, 2, 3
#1 ladies go out to the right and circle with that #2 couple
until #1 ladies are facing ccw around the big circle.
#2 couples arch and #1 ladies duck through to #3 couples while
#2 gents follow up to form circles with #2 couples.
All circle 3 once around. #2 & #3 couples arch and #1 dancers
duck to next couple ccw around the set.)
Repeat circling and ducking to next two more times. [At this point
#1 ladies are again with their original #2 couples.]
#3 couples with #1 gents circle left once while #2 couples with #1
ladies circle just halfway. #2 and #3 couples arch and #1
dancers duck through to original home positions.
All swing partners.
The whole dance repeats with #2 ladies starting (and #2 gents
following) and again with #3 dancers active.
When I've danced this, the callers have mixed the main figure described
above with "break figures", typically involving a grand right and left
or some variation thereof. There are lots of square-dance break figures
that you can easily adapt to work for a six-couple circle . For one
example, see this video of "Thread the Needle" with calling by Phil
(also at https://www.youtube.com/watch?v=B_Ha27GDnSU