Right now I am working at a desk, with a USB number pad. It is a different height than my MBP and has different sized keys. It ends up being difficult to use quickly. I think that Apple should make a number pad that is pushed up to the same height as the MBP because it packs a battery inside. With their wireless obsession, I am sure Apple would want to make a bluetooth device, but it would make so much more sense to me if the pad could add a couple extra hours of battery life. It would come with a MagSafe dongle (power discharge) and a USB dongle (input and power charge) in a single cable like the displays. The device would charge when the computer was connected to A/C power, and only discharge when both the MagSafe cable and USB cable were connected to a computer, to make sure that it would not accidentally discharge in a customer's laptop bag. It is unfortunate that the MagSafe and USB ports are on the opposite side of where a number pad should be, but an extra 18 of cable would be a small price to pay for faster inputting and longer battery life. They might only sell one, but I sure would enjoy it!