Love this idea! I would have more than one glow stick on hand in case one doesn't put out enough glow. I would also put the glow sticks in sealed plastic baggies for safety in case they opened up. This site has several good ideas for Halloween.
Glow in the dark volleyball! cut glow sticks and use a seringe to put in the ball also works with glow paint to ! Omg it would be fun to do this and play with it on the pool when we do the other glow stick stuff !