I like some version of a scout knife. Started with a Case, and I now carry a Victorinox Pioneer or Farmer.
I EDCed an original Leatherman, and then a Supertool, back in the 90s. At first, they wore holes through the front of my jeans (pocket carry), so I carried them on my belt. That lasted through my time in the military, and then in the maintenance trade. Now I only carry one when I'm working around the house, or at the side-job. I found a good deal on a Blast, so I use that, to give the Supertool a break.
My Dad is old-school. He pocket-carries a small, channel-lock-type pliers, and a hawk-bill.