I’m a sucker for multi-tools. The Swiss Army Knife being the old standby and the Leatherman is also a favorite. I came across this handy little 8-in-1 tool and thought it was interesting. It folds down so small that you can easily use it on your key ring. The SwissTech Micro-Plus features the following eight tools: #1 flat screwdriver, #2 flat screwdriver, #1 phillips screwdriver, #2 phillips screwdriver, precision pliers, wire cutters, wire strippers, and a sheet shear.
It appears to be a valuable tool while still being small enough to fit in your pocket with your keys. The Swiss Army knife is a bit more bulky and wouldn’t fit quite as well. The Leatherman is bulkier still and is better held on your belt. This option measures in at 1-7/8” x 1” x 1/4″ folded.