On Sat, 17 May 2025 19:08:36 -0400, Angela DeCarlis via Contra Callers wrote:
  What visual aids do you use when choreographing? I
think I've heard of playing cards, salt and pepper shakers for
 dances written at late-night diners in Jersey... 
I use bits of cardboard.  See my reasoning and other discussion at:
https://colinhume.com/cardboard.htm
And there are three links, though the third one no longer works.
Colin Hume