We recently brought up a really awesome USB charging device called the U-Socket, which has you replacing the socket plate on your wall with one that also has two USB charging ports. If you want to avoid the hassle of taking the face plates off of the wall, you should look into a really nice alternative called the Flipit! USB Charger.
This charger alleviates you of all the wall adapters, but needs to latch on to a plug thatís already in use so it can leach off of the two prongs in the socket. This will likely not be a problem seeing as so many things we own nowadays are electronic anyway; weíre bound to have something plugged in. The only downside to this device is that it is only rated at a 750 mA, which canít even charge an iPad. If thatís not too much of a problem for you, then itís worth the $16 bucks.