If you are not lucky enough to be sporting dual 27 inters at work or home, you may be like the rest of us: where 24" screen is a luxury. These very small USB powered LCD screens are great for holding photoshop palettes, additional windows or even twitter feeds or Pandora windows for a cleaner and uncluttered desktop.
Lilliput Mini USB Monitor
The UM-70C can be used as second monitor for your PC or Mac. You just need a usb cable to power the monitor and send the video signal to the monitor. Don't need power cable or VGA cable. It is perfect for your IM client, a spreadsheet, photo, Email or video. Rotating Portrait or Landscape view. Mac (Intel only), Windows XP, Vista and Windows 7 driver support. A 7" Screen at a resolution of 800×480 and Contrast: 250:1
Powered by DisplayLink technology, MIMO UM-710S 7" USB connected and powered LCD mini monitor is great way to add productivity to notebook and desktop computers. It is ideal for dedicating visual workspace to applications that are used at a glance, such as instant messaging and calendars, also perfect for Gadgets and Widget applications like news and weather monitoring , Photoshop palettes and multimedia playback such as iTunes, digital TV, video conferencing, MP3s, photos and more. We like that uses USB for both connectivity and power and features integrated stand and cover, 90 degree pivoting functionality, a 800×480 resolution LCD, that can be used in portrait or landscape mode.
D-Link's SideStage, a bonus 7" USB-powered display for extra video monitoring that displays 800 x 480 pixels. I would be a great addition to display video Skype, widgets and other screen clutter that we always have floating around. It supports landscape and portrait modes and it is 1.3 lbs and 3/4" thick.