Bluetooth accessories that let you keep tabs of your stuff aren't exactly new, but few are as charming and well-designed as hippih's hipKey, at least from our initial impressions. Created and designed in Denmark, the tiny crescent-shaped device made its US debut at CES 2013 after a couple of very successful months abroad -- it apparently sold out just five days after it was available through Apple Online Europe. It connects to any iOS device with Bluetoo
