Exploding balls would be a real hit, as fun gifts to novice players. Something along the lines of, http://www.amazon.com/Exploding-Golf-Ball-Four-Pack/dp/B009WRC87A
They could be disguised as premium balls and, as this isn't real life, they could, well, actually explode, leaving the player nicely charred.
I would but a few for gifts, or even for match play, at the right price.
Obviously they would not work too well for experienced players, but novices... hey ;·)