If you need another White Sync & Charge USB Cable for Apple iPhone 3G / Apple iPhone 3GS, you can get one for just $1 from The OEM Shop. It advertises that it is for a 3G/3Gs iPhone, but I use the same cable for all my apple products and I’ve never had it not work. So keep that in mind.
If you need a Apple iPhone 3G/ iPhone 3GS Black Car Charger/ iPod/ iPhone 4G Vehicle Charger, you can pick one up for $2.93 shipped.