What to Pack

  Very good, lots of experience behind it and lots of sound advice - I have little to add except when it comes to travel ultra compact.  Lists e g  good reasons for traveling light. Also have:  Avoiding theft. 

 Light weight trekking

Ray Jardine. Book: Trail Life. Creative thinking! Moving this art forward! Very inspiring  for some body into the related field of Ultra Compact Travel.

Packing & Traveling Light Recommendations

By Mark Veber.  A nice and extensive travel light site. Many links. List advantages of traveling light - but he doesn't suggest carrying all in the trouser pockets. 

Peter Cochrane's Blog

Published: Tuesday 27 September 2005.

"In my wilder moments I dream of a 'no bag' future where I travel wearing everything including all my technology in a fly fishing style jacket including all my extra clothing neatly hidden inside my top coat. The basis being that the airlines measure and weigh bags but not people. But that is something for the future."
  I think the future is here now.  If not, I think my "Unorthodox way of reducing volume of gear like camera, phone, computers etc." can make the difference.

The human Swiss Army Knife, Eric

"Carrying permanently about his body more than 1,000 useful objects."  No bag! Sure a colleague! 

An-apartments-worth-of-furniture-in-a-box
 A bit related - many pieces of furniture goes into a quite small box.

What is new in wearables - Engadget

Wearables fits the concept of traveling Ultra Compact as long as they are small. Engadget also have sections about cameras, phones.....