I carry a Swiss Army knife (SAK to many people) that I've had for years. Mine has a couple of screwdrivers, scissors, two blades (one big, one small), corkscrew and awl. Never needed much else. I now have a tiny multitool I got as a trade show freebie and might carry that. When I had my skis, I carried a tool for them. I now have snowshoes, so the multitool will come with me, just in case.