Start the game with equal or as near as possible teams. Serve an easy underarm serve to start the game then using only digs try and score points against the opposition.
One player plays the ball then goes off court to the back and queues until their turn again. Play the game to set number of points. Players must go for the ball, it's about effort, control and tactics.
New hitters rarely miss because of their arm. They miss because of their feet. Build a reliable approach, then time it with your setter.
When your hitter gets stuffed, five teammates standing and watching is how you lose the point. Good attack coverage turns a blocked ball into a second swing.
Coaches spend hours correcting arms in serve receive when the real fault is almost always the feet. Fix the movement and the platform fixes itself.