What is going to count most heavily if a situation develops is "training or knowledge." A ten minute discussion could easily be the most important thing you could give them. More is better, perhaps along with a brief session on fire building, etc. Maybe something like a poster, prominently placed, summarizing important principles, would be useful - depending on your situation.

As far as hardware, I would keep it simple and concentrate on basics - matches, disposable lighter, and tinder plus a disposable poncho are the most critical items. When it comes to things like a compass, frankly I would spend more money, generally much more. When you really need a compass, you must be able to trust it completely - a cheap button gadget is not up to the task. You would be better off supplying a map, perhaps custom made for your locale, that shows prominent landmarks and handrails that will guide people to safety. Here again, training and knowledge are vastly more important than stuff. One thing I would encourage is the carrying of a small flashlight, like a Fenix E05, as EDC - comes in handy in many circumstances, not just lost in the woods scenarios.