The Victorinox Timekeeper Alarm Swiss Army knife is a great tool for travellers. It includes a versatile set of useful tools, plus a digital alarm clock-- all in a pocket knife that is conveniently compact.

This is an older, retired model which has been replaced by the Voyager knife. The Timekeeper Alarm is still sometimes available in used or new condition (and you may prefer it if you use a phillips head screwdriver and don't need a corkscrew).

Timekeeper-- analog watch face, fewer tools
Voyager-- replaces phillips screwdriver with corkscrew, adds a few minor tools
Voyager Lite-- adds corkscrew, white LED light and a few minor tools