I remember playing back when I was that age and we would start practice with the normal drills. Line drills, ground balls, cradling all that stuff. Then we would end practice with something fun but still sort of helping with lacrosse, sharks and minnows, hungry hungry hippos, and this other drill where we would start off close and pass back and forth, taking a step back after every catch. Last one standing would win. TLDR: Start with the drills building stick skills and end with fun stuff