Just get yourself a high output USB charger with multiple outlets. If you want to be fancy there are commercial units with 50 outlets. There are reasonably priced domestic units with 8 outlets and 20A output. Like this one: http://www.amazon.com/EZOPower-Inter...0W+usb+charger Get some 2A USB cables so whatever you plug in charges as fast as it can. USB is now rated to 2A so it makes sense to take advantage of this.