I’ve never thought about placing two 21″ LCD screens on my desk at the same time. But perhaps I can add one 7″ LCD monitor just like Lilliput Mini USB Monitor side by side with my alone LCD screen.
Lilliput Mini USB Monitor is a miniature LCD screen with 800 x 480 resolution. The mini monitor with USB cable can connect your computer directly via USB port, and due to built-in video card, you don’t even have to run unnecessary set. Lilliput Mini USB Monitor features 300 cd/m2, 400:1 contrast rate, supports rotating view and USB 2.0 compliance, and run on most of Mac and Windows operating systems.
When many windows are opened on your desktop, setting a Lilliput Mini USB Monitor for your Gmail or IM should be a good way to save you from a busy work. The mini monitor is available for $99.99 USD at ThinkGeek.