Remember the ring of wizardry near the inn in BG1? And the ankheg plate in nashkel...the ring of protection +1 in the area where gorion died... Are there any hidden items like this in BG2? I found a star sapphire in a latrine in nalia's keep...but other than that, I've yet to stumble over anything real cool.
First time I play BGII(without walkthrouth) I don't see lots of the items show on the latter. The Celestial fury for example, it is inside a building without doors and there is no picture on the screen that you can supose to tresspass. The Staff of Magi is a little hidding too.
You can get some gold and gems in some of the little mountain ranges at the area where you can enter that layer of this dragon guy...what's his name again.....