I don't know if anyone found these already, but I'll throw them out anyway.
Did you know you can EQUIP arrows? the ones you find lying around on the ground near orc camps at times?
I had two strange things happen with I did so. First, when in battle mode, he would turn invisible when he stood still.
The second time he did so, he spun in place when he stood still, weird?
My male warrior, before he even reached level 2, got a very mysterious extra two points added to my sword mastery and augment damage (one extra for each).
I have NO CLUE where these came from, and I know by calculation I did not spend my own points on it. Any clue?
Polymorph seems to last FOREVER! This sucks since I want to kill them weakened as their original form and see them on my trophy list, I don't want to see a bunny on my trophy list in its place. bug?
I was able to BUY BACK finnigans magic lock picks from the merchant window, from finnigan himself! I was also able to do this with the eye of the cyclops.
I don't really carry them around, though, it's almost like cheating with that much more agility (mine is already at 100 at level 29).
But still, it makes me wonder, are there any other items that raise your stats just by having them in your inventory (not the stupid haliberd of the rock).