Besides the obvious use, works great making holes in wood, as a scribe, it always seems up on a ladder your drill bit looses its magnet so I've used to start a hole to hold a long screw in place, I've made stuff camping with it ( start a spoon, fishing hooks, bobbers, cedar pipe ) scraping PVC , untying knots ( like a marlin spike), I've used to retro fit things like grommets, core out, make a existing hole bigger, I'm sure the list goes on and on at least for me. I will say the Swiss Army farmer has the best one(IMHO). I find it saves a knife blade for its intended use. I also want to add splinter extracting and blisters.
Pete