The Manager Swiss Army Knife has been in my pocket for nearly 2 years. This compact tool has all the useful stuff you expect from the line of Swiss Army knives: blade, scissors, tweezers, file, bottle opener, and separate flat-head & Phillips-head screwdrivers.
What makes it a must-have is the retractable ballpoint pen. It’s smooth writing and hasn’t dried out on me in the past 2 years. I’ve taken meeting notes, written checks, and signed receipts. Just extend the combination Philips-head / bottle opener tool for a more comfortable grip during extended composition sessions.
The Manager comes to the rescue time after time for occasional writing needs and tiny DIY tasks because it’s always in your pocket. (I just changed the batteries in a Nerf gun with the Phillips-head screwdriver.) It’s more comfortable to carry in the pocket than a normal pen and more useful, too.
[Victorinox also offers a Midnite Manager model that comes with a built-in LED flashlight in addition to a pen. -- Mark Frauenfelder ]