As much as we hate to admit it, teaching a dog to fetch you a beer is a lost cause. Tennis ball, frisbee, newspaper--sure. But booze? Probably not. You can, however, help someone turn their dog into a mobile bottle opener with the Bark4Beer dog collar. It's got an opener attached to the collar that's retractable, which means the owner won't even have to get up to use it, as long as the pooch is within arm's reach. Another step toward sublime inertia.