Most new vehicles come with automatic headlights now, but it's also possible to retrofit this worthwhile (no more dead batteries because the lights are on) feature. Lights On! From DesignTech International of Springfield, Virginia, is just such a system. Check them out at www.designtech-intl.com and see if they're worth $49.95, plus installation.
If you've been thinking about a rolling multiplex for your family, consider the Video Traveler from Steel Horse Automotive of Compton, California, at www.steelhorseautomotive.com. This portable entertainment system features a TV and videocassette player inside a backpack-style carrier. It plugs into a vehicle's 12-volt outlet and also works off a wall outlet, so the kids don't have to stop watching their movie when you reach your destination. From $330.
SpeedHitch from Keeper Corp. of North Windham, Connecticut makes it easy to line up to a trailer by yourself. It telescopes 12 inches and swivels 180 degrees, so you only have to get close to the trailer to hook up. It's available as a 4- or 6-inch reversible drop hitch. From $100 to $125 at www.keepercorp.com.
Muth Mirror Systems of Sheboygan, Wisconsin, offers outside mirrors that feature a chevron that flashes whenever you use your turn signal, so people in your blind spots know exactly what you are doing. It also reminds you that your signal's on, if that's an issue for you.