Building a frame for your tarp out of wood poles so it can withstand the heaviest of snow, cutting green conifer bows (please, only from naturally knocked over trees) for ground insulation, building a natural shelter, carving tarp stakes, pounding in tent stakes, splitting wood to get dry kindling in wet/frozen conditions, de-limbing dead fallen trees so you can lay them on a fire easier, laying up a big stack of dry wood for an all night fire, splitting a piece of wood for a flat surface to plank cook on, carving things like spoons for fun, and more.
All of the things listed can be done in the right location and right situation without leaving a significant trace or having a negative impact on the environment around you.
I realize that 99% of the users on this forum have no interest in doing the things I just listed. I enjoy doing bushcrafty stuff and it gives me flexibility. Doing more with less.
A folding saw and knife is generally a more practical option and very safe, especially if in the dark.
This got really off topic.