*I mean more along the lines of a heavy-duty knife, something tough.*
Half of my place of employments' 10 acres is a field, forest, and there is a pond next door surrounded by woods.
Never knowing if I'm going to be required to, or just feel like, taking a hike out back I always keep a Bravo 1 nearby. It's the smallest fixed blade that has always been capable of everything I've needed to do.