I have several to offer (click the Call Sheet button for instructions):
Circuitous - lose your partner and find them again - 
http://dancekaleidoscope.org.au/dance.html#Circuitous
Contraindicated - duple-improper but a reverse progression - 
http://dancekaleidoscope.org.au/dance.html#Contraindicated
Diamonds are Forever - duple-diamond formation - 
http://dancekaleidoscope.org.au/dance.html#DiamondsAreForever
Jacob's Ladder - hey-to-hey transition - 
http://dancekaleidoscope.org.au/dance.html#JacobsLadder
Snowflakes that Stay - duple-diamond formation - 
http://dancekaleidoscope.org.au/dance.html#SnowflakesThatStay
Cheers
Keith
On 9/04/2016 4:31 AM, Bradley Smith via Callers wrote:
  Hello all! I'll be calling a session of
challenging contras at a dance 
 weekend next month, and find myself lacking in the aforementioned 
 challenging contras. I want to keep the session balanced, with a mix 
 of dances that are mind-bending or heavily technical as well as some 
 dances that are a step or so below that but that still have something 
 interesting or unique. Would any of you be so kind as to share some of 
 your favorite challenging dances? Thank you in advance!
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