http://www.lapdawg.com/lapdawg-x4.html This thing allows you to stand up or sit down. $69.00 bones..

Although cheap. Not exactly portable, or useful besides as a lap warmer.

Here is what i believe are the ferrari's of portable laptop desks. http://www.lapdawg.com/ not exactly cheap $130.00 (includes shipping), but hey man you gotta live once in a while. Especially if you make a living off laptops.

guns