I've got an iPod nano but don't have a wall charger for it, and I hate the thought of paying $29 for the charger plus another $20 for the cable from Apple. Are any of the aftermarket adapters safe to use (not the cheapo eBay stuff), such as the Cables To Go adapter? I don't want to pay a fortune for it, but I also don't want to fry my nano. What do people here use?