Kensington

Kensington's Hands-Free Visor Car Kit for iPhone is, as its name implies, a bluetooth speakerphone for your car's visor. It allows you to take and place calls without needing to hold your phone or wear one of those dorky Bluetooth headsets. It comes with two rechargeable battery packs that together give you a total of 20 hours of talk time.

The Kensington Windshield/Vent Car Mount with Sound Amplified Cradle for iPhone is a car mount that's specifically designed to be used with a turn-by-turn GPS navigation app. What makes this mount special is that the cradle acoustically amplifies your iPhone's speaker so that GPS instructions can be heard clearly. It comes with a windshield mount, vent mount, and four sets of rubber inserts that work with any iPhone, with or without a case.