Headphones. ( Swimming Headphones ) Available here. When it comes to vehicle accessories, headphones are something many people do not think of at first, but they are one of the most convenient and necessary vehicles accessories. Easily listen to music and news without outside distractions like noisy vehicles and other road sounds that can easily drown out a vehicle’s speakers. Look for a solid pair of headphones that are comfortable and easy to wear, so that it is easy to pull them on and off as needed. Headphones for vehicles are easy to plug in and drivers can set them up and have them ready for use in a matter of minutes so drivers can enjoy uninterrupted sound.