Hang black lights in the gym and use black light reflective tape on the court lines and the balls (spray paint can fade by the end of the game, then you can't see the balls).
Have the kids wear white shirts and socks so they have clear targets to hit with the balls. Provide glow bracelets, if possible.
Added by Lisa Baer
Also see Black Light Volleyball (Click Here) and Black Light Basketball (Click Here), and also check out the Glow-in-the Dark versions of all these games (Click Here). Another dodgeball game to check out is Dodge the Rolling Balls (Click Here).
Jonathan McKee is the author of over twenty books including the brand new The Bullying Breakthrough; The Teen’s Guide to Social Media & Mobile Devices; If I Had a Parenting Do Over; and the Amazon Best Seller - The Guy's Guide to God, Girls and the Phone in Your Pocket. He speaks to parents and leaders worldwide, all while providing free resources for youth workers on TheSource4YM.com. Jonathan, his wife Lori, and their three kids live in California.