Your aura can exude confidence, intelligence, or perhaps sophistication; but an aura of drunken buffoon? No sir. The new Aura Breathalyzer ($150) gives you a sleek gadget to show off and stay relatively sober with at the same time. This fuel cell sensor-driven device is on par with what police offers use so that’s good, and hey, it certainly beats a life full of drinking O’Doul’s in public.