We might keep some web making arachnids around as a source of blood stanching fiber. The sticky spider web was used in
times past by both Native Americans and the Ancient Romans (I don't know who else) to cover seeping abrasions, and
shallow cuts. I have had an occasion to try this myself once when I was out in the woods, to cover a skinned shin. It works.
You may also recall that the spider web is used as the crosshairs in nonelectronic visual enhancement devices, so spiders may
be worth keeping around.
Offered by Laura.