It started off as a more elegant (and faster) alternative to parallel and SCSI computer ports, but now that USB can even be used to charge everything from phones to cameras, there never seem to be enough of them. It's, admittedly, a first world problem, but one that's now thankfully solved with this plug-in tower that includes 40 powered USB ports.
If you're just charging smaller devices like your iPhone you can actually have 40 of them plugged in at one time. But if you need a heavier draw for something like an iPad, you can only have 16 of them concurrently charging. A minor inconvenience, though, for a $57 device that means you may never have to juggle chargers as they fight for just a couple of available USB ports. [Amazon via 7Gadgets]