The "outdoors" varies obviously, so the following is a very specific outdoors. 7 days last week on the San Juan river, group of 12, 5 rafts and my paddle board for the first two and a half days, we were self supported. I have several SAK to choose from and almost took the camper but thought I might want a magnifying glass because I dont see well close up any more and readers can be a pain in the outdoors. So I took an explorer with plus scales in case I had to fill out random forms for the car shuttle and river permit. No saw, I did not think there was enough wood in the area but a small saw would have been handy as we had a campfire of driftwood every night.
Tools used in order of most important
Tweezers, every camp site in southern Utah comes complete with a million goatheads.
Knife, the cords in my tent poles lots their elasticity and had to cut them all out. Opening packages of food. Food prep.
Can opener: food prep, the young couple who brought cans of tomatoes for their turn to cook the community meal and no can opener got a slightly used explorer from me when we got back.
Scissors, trimming frayed clothing mostly, also used for shock cord cutting.
Pen, the pen everyone was using for the shuttle paperwork ran out.
Awl, but I cant remember exactly what we used it for other than it is my favorite fingernail cleaner.
Did not use:
Magnifying glass, I had enough 30-40 year olds around to help and kept readers in my daypack so I could read the map.
bottle opener, no glass on the river.
hook, corkscrew, phillips.
result; I could have taken a 3 layer camper (plus scales) and been just as happy. In addition to the SAK I brought a Spyerco salt, dragonfly.
Cheers,