My trusty Leatherman KICK that Nismogone gave me about six years ago. It was a thank you gift for hosting rides for him and Mdawg back in the day.
The only thing wrong is that I broke the tip this year working on the truck. Aside from that, the hinges are still tight, and everything works as it did when it was new. I feel naked without this tool.
I also have a Apalacian Trail knife in the door pocket of my truck that is the camp cooking knife on our rides.
I also have an Estwing hatchet that I bought when I was 17 and working in a hardware store. Over 30 years later, it is still an awesome instrument. It resides right next to my drivers seat, ready to clear fallen trees and brush. The leather handle rotted away over time, so I made my own handle from reinforced rubber and urethane rubber.
I consider it a knife because teh blade is kept that sharp.