there are numerous offhand drops to be had. many with fire or cold resistances. (colored ones, crimson, cyan and so on) some with fire or cold damage, some of other metal types bronze, steel. some sharper than others (lethal, deadly) all do varying amounts of damage. the highest I have seen is around 12 dmg for non-store bought. drops are rare. the most common place i have seen drops coming from was the catacomb's tougher mobs. but i spent many hours in the catacombs before the 2nd update.
now i don't know where the good drops are. today a bonesplitter droped a crimson Sgian Dubh for me; I have two or three now.
At level 13 you will be hard pressed to get these drops. I would recommend making friends in your world or joining a clan.
In our clan i give these drops to our promising new clansmen.
there is a very good start to a guide on this site:
http://celtic-heroes.wikidot.com/ if i could remember who set it up id give credit to them