I was in a dance that had a lot of shadow
alemands/do-c-do/gypsy etc. and it built a lot of fun
into the dance. 
What was most  memorable at the end of the dance was
that the caller broke it off at the end and instead of
a final caling of swing your partner one last time, he
had us SWING our shadow!  Very unexpected as a dancer
but a fitting ending to a dance in which shadows
played such a significant role.
Mark Galipeau
(just unpacking from Contra Carnivale in Coastal
California w/ Wild Asparagus.)