TwelveSouth's PlugBug fixes one of those problems you didn't know you had, in a very clever way. It's a $34.99 attachment that adds a USB charging port to the standard MagSafe power adapter for an Apple notebook. This way, users can charge an iPhone or iPad -- or any other USB device -- and a MacBook simultaneously, using the same wall outlet.
If one isn't using the MagSafe connector, it also works as a standalone USB charger providing up to 10 watts of power -- enough to refuel an iPad at top speed.
The PlugBug is $34.99 and available via the TwelveSouth online store.