I usually make use of the USB hubs that are included in my monitors. Connected directly to the PC, I have just a Unifying receiver and the receiver for my wireless headset. Of course, a factor in this is the flaky USB hub on my motherboard, which doesn't seem to cope with a large number of devices.

For charging phones, etc., I use the AC/USB adapters, and plug them directly into the wall -- USB ports don't generally provide enough power to charge quickly. And all of that stuff's in the kitchen, 'cos it's downstairs and convenient.

That said, I don't have a printer or scanner, and I use an SD reader for the camera and video camera.