If you are a Mac user, then you know the pains of not having access to a numeric keypad. There are other suitable options out there, but Mobee’s Magic Numpad seems to be the more reasonable choice, so long as you already have the Apple Magic Trackpad.
The Magic Numpad looks like flimsy piece of plastic, but with some accompanying software, it can become several different useful “key” configurations. Whether you just want numbers, numbers with a track pad, or want to make your very own buttons, this kit has a little bit of everything for whatever your needs may be. $30 might seem like a lot to pay for a simple piece of plastic, but the price is more for the accompanying software. You can only pre-order for now, but you can expect them to start shipping sometime in October.