There isn't much a fork can do that your fingers can't, only thing that comes to mind is extracting pickles. Of the western set I think it was the one we have gone longest without, and if we are including non-western utensils then give me chopsticks.
Simple fact is though it's the knife that you actually need. You might get served food that doesn't need one but that is because someone else has done all the cutting.
You are always going to have to adjust your approach to the space you are actually mapping as they are going to have different features you want to highlight. Even with a 3d model you will often want to see from the outside or otherwise generate projections of it rather than use the actual thing. Generally I prefer schematic maps for the most part. I care more about how you move through a space than where precisely things are.
When I have done more traditional dungeon maps, the best tool I've had is using a stack of tracing paper, with multi-level features drawn on each layer they intersect. This is because most built dungeons are going to be built by human-like folk and we go sideways much better than we go up and down. For natural spaces Insuggest you look into the maps cavers draw. They care much more about distance from intersection and rate of descent than precise direction (which is actually hard to get right in caves in any case.)