Clipped to leash or collar, this light keeps you and your pet safe during nighttime walks. Its surprisingly bright LED can be set to flashing mode or continuous beam for visibility after dark. The rubberized housing is water resistant (in our case, it stood up to more than two hours of steady rain without faltering). When you're back home, just plug the light into any USB port to recharge. [$20; inthecompanyofdogs.com]