I was thinking how nice it would be to have a single wall plug with multiple (4-6) USB ports that would be capable of supplying enough power (at 5v) to charge say an iPad, smartphone, bluetooth headset etc. simultaneously at full capacity. But I haven't been able to find such a thing anywhere.
So I am contemplating making one. I don't have any knowledge of electronics and only a rudimentary knowledge of electrics (I can wire a plug) and would appreciate it if someone could tell me how viable this would be from an electrical/electronic point of view. Assuming it is feasible, I'd also like to know whether the work required to make such a thing could be done by an enthusiastic beginner.
Of course if someone can recommend somewhere I could buy such a device I'd happily buy it instead ;-)