The Leatherman Pocket tool is more than just a really useful multi-tool; it has a wonderful backstory.
The story of Tim Leatherman's invention of his well-loved pocket tool is absolutely worth the couple of minutes this video takes. I have had one Leatherman for almost the last 20 or 25 years, I believe it is a Wave. It has served me camping and fishing, and helped out on camper van repairs more than once.
Looks like the Wave is now the Wave+.
Previously: My favorite multi-tool: the Leatherman Wave