I use this edge work series of drills at a lot of my private lessons to get kids warmed up. Its a series of tires or cones 5 in a row by 2 to the side. I use these in a progression with or without pucks.
Inside Edge 1 - Foot
Outside Edges 1 - Foot
Inside/ Outside Edges 2 - feet on ice
Mowhawks
Try it at your sessions. Focus on Knee bend, thrust, power, holding the edge, heads up, stick control and much more…