In thought I take no knives but in action I do. Here, let me explain.
We pack two super sharp inexpensive paring knives (with blade guards) with a small cutting board. Why two? It's a belt and suspenders thing. I seldom use these knives for anything else but food prep, and even that doesn't happen very often. But I don't consider these canoe tripping knives so In thought they don't really exist, but in action they reside in the kitchen kit.
We carry two near identical folders in our pockets. The identical part is merely a coincidence. Why two? It's the belt and suspenders thing again. I actually use mine very occasionally, she complains about hers and often slips it into another pocket God knows where for safe keeping, which generally gets found one week later when I'm packing away the gear. So because these folders see little use I consider them not tripping knives in thought, but they are nevertheless almost in action.
Finally, I bought a Mora Companion as a Christmas gift for her a couple years ago. What woman wouldn't love a knife for Christmas? (She already has jumper cables.) As it happens she only likes it marginally more than the folder. So the Mora resides in its sheath on the side of the food barrel where it reminds me daily of my husbandly good taste in gift ideas. But it never actually gets used. A nice shiny sharp blade hanging there just in case, so it is not really my canoe tripping knife
in thought, but it is potentially there in action.
Of all the blades I bring there is one, or two as it happens, that I do consider necessary to canoe tripping both in thought and in action. My axe and/or hatchet. Why both, two of the similar same? Belt and suspenders. I'm a sad man actually. I look for things to do with either one of these tools even if all I really need to do is bend and pick up sticks to break them under my foot for the twig stove. And then there's the saw of course, a Sven type and a pruning type. You shouldn't need to ask why two. Nothing like sawing and tap splitting wood (when all I needed to do was the bending picking up thing) to feel good about fire prep. That, and sitting before a small cheerful fire wondering what knife I'd really like to own and bring, and not really need. I wonder if she'll give me a knife for Christmas this year?
ps . I don't bring both axes, both saws on trips. You do eventually just have to trust your pants won't fall down.