Ending today, ThinkGeek offers its Back to the Future Flux Capacitor USB Car Charger for $14.99 plus $6.95 for shipping. That's tied with our mention from two weeks ago as the lowest total price we've seen. (It's the best deal today by $6.) This device won't help you travel through time, but it can charge two devices simultaneously. It also features an on/off switch for the Flux lighting effect and flexible pivot arm.