Since late 2022, I have been working on a series of packets for use in my own teaching.
The first, and most critical to my pedagogy, is my Elementary Violin Technics.
It is primarily a combination of Soviet-school bowing exercises and a deconstructed and somewhat expanded version of Ysaÿe's wonderful Exercices et gammes (available in print from Schott).
Elementary Violin Technics definitely remains a work in progress, but its current state is available for download as a PDF file.