Do you use an iPad and Laptop? Check this out...

Use your iPad as a second monitor for your laptop when you travel or at the office. It works just like plugging in a second screen, only over wifi and costs only $10! Well, you have to buy the iPad, of course too :-) I just bought this app and tried it out and am amazed at how well it actually works. Dragging some palettes or windows has slight delays, but mouse movements and clicks across screens is perfect. You could keep your twitter client or Photoshop palettes on the second monitor to give you more room for the main stuff on your laptop screen. I love my iPad! And this is just one more reason why :-)

http://bit.ly/aWiDpU