This volleyball game is a variation in Winners (a.k.a. King/Queen/Monarch of the Court) which reduces time between rallies to maximize contacts.
This small-group volleyball ball-handling drill has an added dimension which forces players to have teammate awareness and focus on their next duty.
This Winners variation is a rotational game which can be a good playing warm-up and/or a way to get a large number of players playing for assessment, etc.
This small-sided volleyball game is a variation on Winners with a single team on one side for a set period trying to accumulate as many points as possible.
This is a volleyball game which can be used to give your team lots of focused serve receive reps, and even more to the weaker rotations.
The scramble volleyball game or drill is one which is quite useful for working on out-of-system play and getting players committed to keeping the ball in play
This is a nice 3-person volleyball pepper variation which could be used as a warm-up drill and/or to work on ball control in general terms.
Here's setting drill that's good for quick reps of both front and back sets requiring little space and which is suitable for training or pre-match warm-up.