From Woot.com, a portable auxiliary battery pack from Black & Decker, $10 for 2 (plus $5 shipping). Good Tuesday, Sept. 9 (while supplies last). Works for both AC and USB powered items (a nice bonus).
size/weight: “Compact, portable, rechargeable power fits in pocket 3.15 by 5.75 by 1 inches; less than 1 pound” (in other words, not tiny or light, but not large or heavy)
edit: And, happy 1000th post to me!
Message Edited by Miikerman on 09-08-2008 10:41 PM