My young student, Gwen, needed a little motivation to do something the first time or to be in rest position instead of playing while I was playing an example.
We keep score and she gains a point when she does something the first time. So far she beats me at every lesson!
My daughter can’t practice violin without me. We use marbles to get through practicing. She picks a prize for when the marble jar is full. Each time she does an assignment we add a marble to the jar. If needed, I add a marble for cooperating.
The easy button and beads also help lighten the mood at lessons.