Players work in pairs with a ball between them. The player starting with the ball spikes it to their partner who needs to get down and did the ball back to the spiker, who should easily be able to catch it. The receiving is trying to pass as accurately as possible.
This drill is similar to a match situation in that the receiver has to react to prepare and the dig the ball directly back to the spiker.
Ensure the player spiking keeps changing the ball velocity and direction to make the drill more of a challenge for the digger.
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.