Meet the GRM 7-in-1 Multitool Shovel: a handy tool that can be used as a saw, knife, nail puller, ruler, hex wrench, and spearhead. It can be used to scale fish, peel animal skin, or even as a spear to defend yourself.
This self-defense shovel measures 10.4″ in total, weighing only 170g. Not too expensive either.