You may think the world doesn't need yet another iPad stand, but this mod puts the others to shame. Those times where you have to have a full keyboard for typing, an old iMac stand makes a clever DIY mount.
While you obviously can't buy a whole iMac to get the parts for this, you could certainly look around on eBay for a replacement iMac stand—you should be able to find them pretty cheap. Other than that, you'll just need some basic tools like a saw, drill and hot glue gun to create an small, iMac-mimicking mount for your iPad.
It's the perfect set-up for when the iPad keyboard just doesn't cut it. You can place it on a small desk and turn it into an instant messaging portal, type up some documents without firing up your computer, or even as a second monitor for your existing iMac. Hit the link for the full instructions.