HP's new Deskjet 450 is a surprisingly superb color printer of remarkably small stature.
At 13.3" x 3.2" x 6.5"--about the size of, say, a travel pillow--, the briefcase-friendly Deskjet 450 comes complete with a fast-charging Lithium-ion battery that runs for up to 350 pages per charge (AC adapter/charger included).
The pop-up paper feed slot accommodates a variety of paper stock and sizes and churns them out at 8 or 9 ppm. On top of its serial and USB connection options, the Deskjet 450 is also IR and Bluetooth ready, making it a wireless printer for your PC, laptop, PDA, etc. that could sit unobtrusively elsewhere, under your chair, up on a bookshelf or off in the hotel closet.