FAIRY BERRY Fun Fun and more Fun! Place these small 3/4″ diameter clear balls everywhere around your party venue. On the lawn in the garden hanging from trees shrubs and ceilings. Their water resistant design allows for use in water features where they will float. Each one has a tiny glowing white LED that fades on and off slowly. Collectively they produce a moving firefly or fairy light effect that is absolutely unique. You can replace the batteries also. Fishing line can be attached using the small recessed hook for anchoring. Choking Hazard. Keep away from small children. Careful placement in foot traffic areas should be considered to prevent tripping.