The Victorinox Voyager Lite Swiss Army knife is a great tool for travellers. It includes a versatile set of useful tools, plus a digital alarm clock and an LED flashlight-- all in a compact pocket knife that you can take with you everywhere (except to the airport check-in!)

Huntsman Lite-- no clock, adds wood saw
Spartan Lite-- no clock, scissors, hook or pen
Voyager-- no phillips screwdriver or LED light