Tired of your four-legged friend leaving paw prints, fur, scratches, or worse in your back seat? Pick up and hook up the Filson Dog Car Seat Sling ($85). Made from 12.3 ounce dry finish Tin Cloth and finished with green edge trim, this doggie hammock attaches to the front and rear headrests of your car using four adjustable straps, and keeps your buddy's mitts safely off the upholstery. Downside? There doesn't appear to be any holes for using a seat belt harness strap, so it'll be up to you to keep your pooch inside the car in the event of an abrupt stop or passing tennis ball.