I’m going to promote a product now: the Swisstech Utilikey
I use a Swisstech Utilikey basically every day. I love this little thing. It’s compact and as useful as a normal pocket knife for the same kinds of things, but it is also three screwdrivers and a bottle opener. It clips to a key ring and clips off just as easily. I keep mine clipped to a LED light.
Additionally, they are backed by a really nice warranty. I broke one of the blades on the Phillips screwdriver and Swisstech replaced the Utilikey for free.
They make a good gift, too. I gave one to my Dad, who is a real hard man for whom to shop.
So there you go. Head on over and get one.