1+ on the multi-tool. I have been carrying one for over 30 years and find it useful many times a day. Currently I have 3 leatherman tools.

Favorite is the Wave. I really like the file and diamond "blade". The saw works well. I used it yesterday to make a restraining device for an antenna, opened several boxes, cut some very fibrous plants with the serrated blade, used the screwdriver to repair a door at a friends and more. Mine is an older one without the hex tool support but that is not an issue for me.

The Rebar model has a different cut on the file which I do not like as well as the Wave. However the Rebar has replaceable cutting blades on the wire cutter so it resides with my field electronics gear.

The third is an original leatherman which I purchased a few weeks after they were first introduced. I keep it in my desk more as a retirement home for a good friend. It has seen me through many a difficulty.

I won't leave home without one.