Juggling balls and juggling scarves have been used as a teaching aid, both in training courses, workshops and lessons by some teachers, since the late 1970s.
Not reacting to letting a ball drop is for example an exercise in the use of inhibition. Paying attention to the throwing, not the catching, is an example of paying attention to the means-whereby, not the end.
Michael Gelb relates how he used the Alexander Technique to learn to juggle in his Body Learning.
He went on to writing about juggling, and using juggling as a practical skill, as self-development and as a metaphor for learning and developing skills in the business world: Lessons From the Art of Juggling by Michael J. Gelb and Tony Buzan, and More Balls Than Hands by Michael J. Gelb.
‘Juggling and habitual use of the self’ by Ashley Diamon has observations on applying the Technique to juggling, and how juggling can be used to making discoveries about habits in general.