Apple's official camera connection kit for the iPad is pretty cool for quickly storing photos off your camera. However, it is two dongles, one of which is a USB port and the other an SD card reader. That's not terrible, but it's not exactly convenient either.
Enter M.I.C.'s 3-in-1 kit for the iPad. The single device includes the USB port, SD and MicroSD. It runs the same price as the Apple one, but includes more. Not bad.