A good utility folder.
I have a Smith and Wesson folder that I occasionally carry around town, and always carry when I am woodworking. Little thing is useful, real useful.
I see the value in blades of different types. That little utility for working, a pocket knife for everyday shit, and larger blades for outdoorsy shit.
I also see the value of a good hand ax. There is nothing more useful in the outdoors than a good little ax you can keep in a pack.