A Few Goodies I've found so far:
Living Bow: At the beginning of each combat it talks to you (If you've asked it to!) and gives you pointers on one of the enemies you are facing. Also spawns healing fruit that regenerate rage/mana (Out of combat).
Winter Set: This set, when full, gives all enemies -1 speed! Talk about powerful...
Wanderer's Gloves: I haven't tried them out, but they say they give +10 rage whenever you cast teleport, or use a teleport skill (Demonic exchange? Archdemons??) either way, a cool idea for a rage booster!
Dice: The enchanted dice will, for a while, give you army boosts at the beginning of combat. Sometimes +1 initiative, or speed, or maybe a little attack or defense.. and sometimes +10% crit chance! Sadly, luck eventually runs out
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I'm really liking the bag so far!