Truth be told, the majority of creatures in the vermin kingdom use no more equipment than their own claws, and maybe a rock sometimes to bash open something. Quite a few vermin, though, have learned the skills to craft tools.

It is forbidden for a vermin to use a tool or weapon in the sight of a human--if humans were to know they had learned the secrets of tool use, extermination would be quick and devastating. A vermin caught doing this, more often than not, ends up dead, drowned in the river or chewed up in a back alley. The worst sin in the vermin kingdom is to endanger the vermin kingdom, and justice is severe.

Materials

The majority of tools and weapons are made from wood, as it is soft and easy to carve, even with tooth and claw; rock, as it is plentiful and easily sharpened; and bone, as it is hard, yet easy to shape. Metal-working is incredibly rare--only one bellows is rumored to have been ever made in the vermin kingdom. Metal items fetch much in barter, and anyone who owns a metal object made by vermin is a wealthy vermin indeed.

Leather is another oft-used material--vermin let few things go to waste when one of them dies, and bone and leather are plentiful from the recycling of the dead. Leather is used for shelters, and, very rarely, belts, vests, scabbards, and the like. Vermin are loathe to wear such human-esque trappings, as it is unnatural, and increases the danger of being caught.

Weapons

The most common weapons made are, by far, spears. It is easy to find a solid stick of wood and attach a sliver of bone or rock to it. Sharpened sticks, much like javelins, are also often made. It is much more rare to ever see a dagger or sword, and even rarer to see a metal-crafted one. A few bows have been seen in the hands of the fiercest warriors, but the bipedal nature of most vermin makes these difficult to use. (A vermin without the Bipedal Training feat takes a -3 to attack with hand weapons or bows, as they have a hard time keeping their balance on two legs.)

Weapons use the same statistics as they have in the Player's Handbook. However, bone weapons in general and rock piercing weapons take a -1 to damage (minimum 1 point.) All-wood weapons are -2 to damage (minimum 1 point.)