If you're familiar with the crunching sound of bikes, kayaks, or other gear strapped to the roof of your car that's just been destroyed as you absentmindedly pull into a garage, you'll appreciate this HeadsUp sensor system that will stop such catastrophes from happening again.
The starter kit includes a couple of waterproof sensors you strap to your roof-mounted gear before you head home, an in-car audible alarm, and an LED visual alert sign you hang at the back of your garage. The next time you pull into your driveway and open the garage door, the sensors on your gear will detect a signal emitted from the LED sign and will trigger both the audible alarm and the flashing LEDs. And at least one of them should remind you there's stuff on your roof well before you get near the entrance to your garage. Think of it as $170 worth of insurance that's going to stop your considerably more expensive gear from getting destroyed. [HeadsUp Systems via Gear Junkie]