Jack shares a find in the comments about this GeChic 13" Portable LCD that can be used as a secondary screen for your laptop. [Thanks Jack]. Ok, so this is mainly a DSLR Video blog - there's more to this product.
The 13" screen has a resolution of 1366 x 768 (about HD resolution), but the real kicker is that it can be powered via simple USB 5V and has the option for HDMI input that can be used with Video cameras (your DSLR camera). This solves several problems for those who want to tote around a decently sized monitor around with HD resolution for remote monitoring. While the video above gives a different price, it's currently $168. Check it out on NewEgg.com (here).
GeChic 13" USB Powered Portable LCD Display with HDMI