Reptiles do not play with toys the way mammals do, but Chinese water dragons are alert, active animals that benefit enormously from environmental enrichment. For this species, enrichment means an environment that engages natural behaviors, climbing, basking, hunting, swimming, and exploring, rather than novelty objects to bat around.
A barren enclosure with a single branch and a water bowl leaves a curious animal with nothing to do, which can lead to stress behaviors like persistent glass-surfing and nose-rubbing. A complex, changeable habitat with varied surfaces, hiding spots, and opportunities to forage keeps the animal mentally engaged and physically conditioned.
The most effective enrichment for a water dragon is structural and sensory: things to climb, places to hide, water to use, and food that requires some effort to obtain. Thinking about enrichment as habitat design rather than as a category of purchased products leads to far better results for this species.