Practice

Question
What can you do during the off season to keep up volleyball techniques, when the only place you have to practice is in the yard

Answer
I know when I'm stuck somewhere by myself, the big thing I will practice doing is just setting straight up in the air.  Just handling the ball more will give you a little more confidence in your primary tool.  Also, what a good time to practice those one-handed bumps, pancakes and tipping.  You can also practice setting with a basketball to increase your hand strength and coordination.