In 1989 I used a philips head screwdriver all the time at work and carrying a regular sized screwdriver in my pocket was a pain. Then I happened to walk past a Swiss Army Knife display and they had a small (84mm) Tinker. There was my philips head. And it would fit in my pocket! My wife purchased that knife for me (and I still have it) and that started it all (what I would refer to as 'consciously EDCing') for me.